Views: 0 Author: Site Editor Publish Time: 2025-10-20 Origin: Site
The importance of construction safety for rotary drilling rigs
In modern infrastructure construction, rotary drilling rigs have become indispensable key equipment for various building foundation projects, bridge construction, and large-scale water conservancy projects due to their powerful drilling capabilities and efficient construction efficiency. From towering skyscrapers to majestic bridges spanning rivers, lakes, and seas, from urban underground rail transit to large-scale energy facilities, rotary drilling rigs play an important role in pile foundation drilling in these engineering projects, and their construction quality directly affects the stability and safety of the entire project. For example, in bridge construction, the pile foundation, as the foundation supporting the main structure of the bridge, must have sufficient strength and stability. The quality of the rotary drilling rig construction will directly determine the bearing capacity of the pile foundation, thereby affecting the safety performance of the bridge during long-term use.
However, there are many safety hazards during the construction process of rotary drilling rigs, among which anti overturning and anti collapse are the two most critical issues. Once an overturning or collapse accident occurs, the consequences will be unimaginable. These accidents not only pose a serious threat to the safety of on-site construction personnel, leading to tragic casualties, but also have a huge negative impact on the engineering project itself. It may cause serious delays in project progress, increase additional construction costs, and even put the entire project at risk of scrapping, resulting in incalculable economic losses to the construction unit. For example, in [specific accident case], due to improper operation of the rotary drilling rig, it overturned, causing injuries and fatalities to multiple construction workers, forcing the project to stop for several months, and resulting in direct economic losses of tens of millions of yuan. Therefore, strictly following the anti overturning and anti collapse operation norms is of vital significance for ensuring the safety of rotary drilling rig construction, maintaining personnel life safety, and smooth project progress. It is a key link that cannot be ignored in engineering construction.
（1） Common overturning scenarios
During the construction process of rotary drilling rigs, there are multiple scenes that are prone to overturning accidents, which are like hidden "time bombs" in the dark, constantly threatening construction safety.
During construction by the river, due to long-term erosion and immersion, the soil structure along the shore is damaged, and the soil becomes soft and unstable. The rotary drilling rig has a relatively large weight, and when it operates near the river, the soft soil cannot withstand the heavy pressure of the rig, causing the tracks to sink into the soil, resulting in an imbalance of the center of gravity of the rig and ultimately causing overturning accidents. In the case of a specific riverside construction accident, a rotary drilling rig at a bridge construction site was used for pile foundation construction by the river. Due to the lack of detailed geological survey and reinforcement treatment of the riverbank, the track near the riverbank suddenly sank during the drilling operation, causing the rig to lose balance and capsize into the river, resulting in serious equipment damage and casualties.
Construction in backfill soil areas is equally dangerous. Backfill soil is usually composed of a mixture of various types of soil, with varying degrees of compaction and bearing capacity. When the rotary drilling rig operates in such an area, if the construction personnel do not fully compact and inspect the backfill soil, the tracks of the drilling rig may tilt due to uneven settlement of the soil, causing the center of gravity of the drilling rig to shift and leading to overturning. There was once a construction site where a rotary drilling rig was operating in the backfill soil area during foundation construction. Due to insufficient compaction of the backfill soil, one side of the rig's track fell into the soil during movement, causing the machine to tilt and eventually capsize, resulting in the interruption of the project progress and causing huge economic losses.
When constructing near the pile head, if the pile head is not properly handled or marked, the rotary drilling rig may accidentally press against the pile head during operation, causing the pile head to break or shift, thereby disrupting the support balance of the drilling rig and causing overturning. In a specific case of pile head construction accident, a construction site accidentally pressed a pile head during operation due to the failure to timely backfill and clearly mark the completed pile head. The pile head shattered instantly, and one side of the drilling rig lost support, resulting in a serious overturning accident and causing injuries to construction personnel and equipment damage.
When the rotary drilling rig passes through narrow access roads, due to limited space and possible issues such as uneven road surfaces and unstable foundations, the rig is prone to center of gravity deviation during operation. If the operator fails to detect and take effective measures in a timely manner, it may lead to the overturning of the drilling rig. For example, at a road construction site in a mountainous area, a rotary drilling rig needs to pass through a narrow temporary access road to reach the construction site. On one side of the sidewalk is a steep slope, while on the other side is a deep ditch, and the road surface has become uneven due to rainwater erosion. When the drilling rig was passing through the access road, due to the operator's misjudgment of the road conditions, the track on one side of the drilling rig was suspended, the center of gravity was unbalanced, and it eventually overturned in the deep ditch next to the access road, causing a serious accident.
（2） Thoroughly analyze the reasons
The occurrence of overturning accidents of rotary drilling rigs is often the result of multiple factors, mainly including geological conditions, improper operation, and equipment problems.
Unstable geological conditions are one of the important factors leading to the overturning of rotary drilling rigs. The geological structures in different regions are complex and diverse, and some areas may have soil problems such as softness, quicksand, and caves. In soft soil, the tracks of rotary drilling rigs are prone to sinking, causing the center of gravity of the rig to decrease and shift, increasing the risk of overturning. Drifting sand geology is even more dangerous. During the operation of the drilling rig, drifting sand may continuously flow, causing changes in the support foundation of the rig and leading to overturning. The existence of caves may cause the drilling rig to suddenly fall into the cave during operation, resulting in serious overturning accidents. For example, a construction site is located in a karst area with a large number of underground caves. During the construction process of the rotary drilling rig, due to the lack of detailed geological exploration in the early stage, the location of the cave could not be accurately detected. The drilling rig suddenly fell into a large cave during operation, and the entire rig overturned instantly, causing significant casualties and property damage.
Improper operation is also a common cause of overturning of rotary drilling rigs. Unauthorized walking is a prominent issue, as some operators, in pursuit of speed or convenience during construction, violate operating procedures by walking quickly or forcefully turning on unsuitable terrain, resulting in a sudden change in the center of gravity of the drilling rig and causing overturning. For example, the operator of a rotary drilling rig at a certain construction site drove the rig quickly through an area with a steep slope and uneven ground without carefully observing the road conditions ahead. Due to the high speed, the rig suddenly lost balance during operation, resulting in a rollover accident. Excessive speed during rotation is equally dangerous. If the speed of the rotary drilling rig is too fast during the rotation process, it will generate a large centrifugal force, which will seriously affect the stability of the drilling rig and easily lead to overturning. There was once an accident where the operator of a rotary drilling rig increased the speed to the maximum in order to improve work efficiency during operation. However, the rig suddenly lost control during rotation and tilted to one side, causing serious consequences.
The issues with the equipment itself cannot be ignored. A high center of gravity of a rotary drilling rig can deteriorate its stability. During operation, if it is disturbed by external factors such as uneven ground or wind force, it is prone to overturning. However, if the ground pressure ratio of the track is unreasonable, it will cause uneven support of the drilling rig on the ground, and some areas will bear excessive pressure, which can easily cause the track to sink into the ground and cause the drilling rig to tilt and overturn. In addition, issues such as structural damage to equipment and aging of key components can also weaken the overall performance and stability of the drilling rig, increasing the risk of overturning. For example, in a rotary drilling rig, due to long-term use, the slewing bearings were severely worn. During a normal operation, the slewing bearings suddenly broke, causing the rig body to lose control and resulting in a serious overturning accident.
（1） Site and equipment inspection before homework
A comprehensive and meticulous inspection of the construction site and equipment before the operation of the rotary drilling rig is an important prerequisite for preventing overturning accidents. The flatness of the construction site and the bearing capacity of the foundation are directly related to the stability of the rotary drilling rig. Construction personnel should use professional measuring instruments such as level gauges, theodolites, etc. to measure the construction site and ensure that the ground leveling error is within the allowable range. For uneven sites, leveling treatment is required, which can be achieved by filling soil, excavating soil, or laying steel plates to meet the operational requirements of rotary drilling rigs. At the same time, the bearing capacity of the foundation should be tested by on-site load tests, standard penetration tests, and other methods to determine the bearing capacity of the foundation. If the bearing capacity of the foundation is insufficient, reinforcement measures such as pile driving and replacement should be taken to enhance the bearing capacity of the foundation and provide a solid and stable support foundation for the rotary drilling rig.
The inspection of key components and safety devices of equipment is equally crucial. The key components of the rotary drilling rig, such as the track, support legs, rotary mechanism, drill rod, and drill bit, should be inspected one by one for any damage, deformation, wear, and other conditions. For example, whether the track shoes of the tracks are broken or detached, whether the extension and contraction of the support legs are flexible and stable, and whether the gears and bearings of the rotating mechanism are severely worn. Safety devices such as tilt sensors, limit switches, braking devices, etc. should be checked for their integrity and effectiveness. The tilt sensor should be able to accurately detect the tilt angle of the drilling rig. When the tilt angle exceeds the set value, an alarm should be issued in a timely manner and corresponding control measures should be taken. The limit switch should ensure that it can automatically stop the operation of the equipment when the drilling rod is lifted, lowered, or the drilling rig rotates to the limit position, to prevent equipment damage or overturning accidents caused by operational errors. The braking performance of the braking device must be reliable, capable of effectively braking when the equipment stops working, preventing the equipment from sliding or moving.
（2） Key points of operation during the homework process
The correct operation method under different working conditions during the operation of rotary drilling rig is the key to ensuring the stable operation of equipment and preventing overturning. During the walking process, operators should always pay attention to the road conditions and avoid walking on soft, muddy, obstructed or steep roads. When passing through narrow sidewalks or near dangerous areas such as pit edges and rivers, it is necessary to reduce walking speed and operate cautiously. If necessary, steel plates can be laid on the road surface or other reinforcement measures can be taken to increase the bearing capacity and stability of the road surface. At the same time, it is necessary to maintain the straight walking of the drilling rig, avoid frequent turning and sudden braking, and prevent overturning caused by center of gravity deviation.
When rotating, the operating handle should be slowly and smoothly turned to control the rotation speed, and rapid rotation is strictly prohibited. Rapid rotation can generate significant centrifugal force on the drilling rig, causing the center of gravity to shift and increasing the risk of overturning. During the turning process, close attention should be paid to the surrounding environment to ensure that there are no obstacles within the turning radius and to avoid collisions with other equipment, buildings, or personnel. At the same time, attention should be paid to observing the stability of the drilling rig. If signs of tilting or shaking are found, the rotation operation should be stopped immediately, the cause should be identified, and corresponding measures should be taken for adjustment.
It is crucial to select drilling parameters reasonably based on geological conditions during drilling operations. In soft soil layers, drilling speed and drilling pressure can be appropriately increased, but attention should be paid to controlling the performance of the mud and maintaining the stability of the borehole wall; In hard soil or rock formations, the drilling speed should be reduced, the drilling pressure should be increased, and appropriate drill bit types and drilling methods should be selected, such as using a combination of impact drilling and rotary drilling. During the drilling process, it is necessary to maintain the verticality of the drill rod. The verticality monitoring device equipped on the drilling rig can be used to monitor the verticality of the drill rod in real time. Once any deviation is found, it should be adjusted in a timely manner. At the same time, it is necessary to adjust the center of gravity of the equipment reasonably. Based on the lifting and lowering of the drill rod, the drilling depth of the drill bit, and the changes in the rock and soil inside the hole, the extension length of the support legs or the position of the counterweight should be adjusted in a timely manner to keep the center of gravity of the equipment within a stable range. For example, when the drill rod is lifted, the center of gravity of the equipment will move upward. At this time, the support legs can be adjusted appropriately to increase the stability of the equipment; When the drill bit reaches a deeper position, additional weights can be added as needed to maintain the balance of the equipment.
（3） Measures to cope with adverse weather conditions
Adverse weather conditions such as thunderstorms and strong winds can have a serious impact on the construction safety of rotary drilling rigs, therefore effective measures must be taken to address them. In thunderstorm weather, operations should be immediately stopped and the rotary drilling rig should be moved to a safe area for parking. The safe zone should be chosen in areas with high terrain, away from objects that are prone to lightning strikes such as large trees, power poles, metal billboards, etc., and where there is no standing water around. When parking, the drill rod should be retracted and fixed to avoid it becoming a lightning object under the action of lightning, which may cause safety accidents. At the same time, the power supply of the drilling rig should be turned off to prevent lightning from damaging the equipment through the electrical system. Operators should evacuate to a safe indoor location as soon as possible to avoid being struck by lightning in the wild.
When encountering strong wind weather, the first step is to determine whether to continue the operation based on the magnitude of the wind and the actual situation of the drilling rig. Generally speaking, when the wind exceeds level six, the operation should be stopped and the mast of the drilling rig should be lowered to a lower position to lower the center of gravity of the equipment and reduce wind resistance. Move the drilling rig to a sheltered location, such as the leeward side of a building or a valley, where the wind is less strong. When parking, use tools such as ground anchors and wire ropes to securely fix the drilling rig to prevent it from being blown down by the wind. For example, ground anchors can be set at the four corners of the drilling rig, and the steel wire rope can be tightened with the ground anchors. The other end of the steel wire rope can be fixed in the corresponding position of the drilling rig to ensure its stability in strong wind weather. Meanwhile, it is important to closely monitor weather changes and resume operations only after the wind has weakened to a safe range. Before resuming work, a comprehensive inspection of the drilling rig must be conducted to ensure that the equipment is undamaged, all components are securely connected, and safety devices are functioning properly and effectively before construction can continue.
（1） Collapse phenomenon and hazards
During the construction process of rotary drilling rigs, hole collapse is a common and serious hidden danger of collapse. When a collapse occurs, a series of obvious phenomena will occur. The most intuitive manifestation is the soil falling off the borehole wall. Under various factors, the originally stable borehole wall gradually loses its support and begins to fall into the borehole. These fallen soil not only fill the borehole, affecting its normal shape and size, but may also cause difficulties in the subsequent placement of steel cages and concrete pouring. The decrease in mud level is also one of the important signs of borehole collapse. Under normal circumstances, the mud level inside the borehole should be maintained at a certain height to maintain pressure balance and wall protection effect. However, when a hole collapse occurs, due to the collapse of the soil on the hole wall, the mud will leak into the surrounding soil, causing the mud surface to rapidly drop. At this point, the construction personnel can clearly observe a decrease in the amount of mud in the mud pit, with the mud level below the normal water level.
The impact of borehole collapse on construction progress is evident. Once a hole collapse occurs, construction must be stopped immediately, and construction personnel need to take corresponding measures to deal with the hole collapse problem. This may include backfilling boreholes, re preparing slurry, adjusting construction techniques, etc. These additional tasks will consume a significant amount of time and manpower, leading to serious delays in the project schedule. For example, a bridge pile foundation construction project was stalled for several days due to a collapse accident, which not only increased construction costs but also affected the overall schedule of the bridge construction.
The harm of collapsed holes to engineering quality should not be underestimated. Collapse of the borehole will result in irregular shapes and varying hole sizes, which will directly affect the bearing capacity and stability of the pile foundation. In the subsequent process of lowering the steel cage, due to the collapse of the hole wall, the steel cage may not be accurately placed in the design position, resulting in uneven gaps between the steel cage and the hole wall, affecting the quality of concrete pouring and ultimately reducing the strength and durability of the pile foundation. During concrete pouring, the soil falling from the collapsed hole may mix into the concrete, forming a mud layer that reduces the overall integrity and strength of the concrete, seriously threatening the quality and safety of the project.
The collapse of the hole also poses a serious threat to personnel safety. When a collapse occurs, the sudden drop of soil from the hole wall may injure construction workers working at the edge of the hole. If the collapse of the borehole is severe, it may also cause the ground around the borehole to collapse, trapping construction equipment and posing a huge threat to the safety of equipment operators.
（2） Deep analysis of the causes of collapse
Stratigraphic factors are one of the important reasons for the collapse of rotary drilling rigs during construction, mainly including mechanically unstable formations and water unstable formations. Mechanically unstable strata such as artificially backfilled gravel soil, industrial waste, quicksand layers, alluvial layers (pebble and gravel layers), etc. have loose soil structures, weak bonding forces between particles, and poor self stability. During the drilling process of a rotary drilling rig, the rotation and impact of the drill bit will cause disturbance to the soil on the borehole wall, making the already unstable soil more prone to collapse. In the flowing sand layer, due to the almost no bonding force between sand particles, once disturbed by external factors, the sand particles will flow with the water flow, causing the pore wall to collapse rapidly.
Unstable formations such as mudstone and shale, which are sensitive to water, have strong water absorption properties. When encountering water in the mud, hydration and expansion occur, leading to an increase in rock volume and thus damaging the stability of the pore wall. Mudstone becomes soft and its strength decreases significantly after absorbing water, making it unable to withstand the pressure of mud in the hole and the disturbance of the drill bit, which can easily lead to hole collapse accidents.
Construction process issues are also a key factor causing collapse. Improper mud ratio is a common problem, and mud plays an important role in wall protection, slag carrying, and cooling of drill bits during rotary drilling rig construction. If the relative density of the mud is not sufficient, the viscosity does not meet the requirements, and the colloid rate is too low, a solid mud skin cannot be formed on the hole wall, and the pressure inside and outside the hole wall cannot be effectively balanced, resulting in the loss of support and collapse of the soil on the hole wall. In the case of a specific mud ratio accident, during the construction of a rotary drilling rig at a certain construction site, the mud ratio was unreasonable and the relative density of the mud was too low. When drilling into the sand layer, it was unable to effectively protect the hole wall, resulting in the collapse of the hole wall and the scrapping of the borehole.
Excessive lifting speed of the drilling bucket can also cause collapse. When the lifting speed of the drilling bucket is too fast, it will cause the upper mud to pass through the annular gap between the drilling bucket and the hole wall, and there will be no time to replenish it downstream, resulting in negative pressure. This negative pressure will have a suction effect on the pore wall, damaging its stability and causing it to collapse. When the descent speed of the drilling bucket is too fast, the mud flow is displaced by the drilling bucket, resulting in a large upward and backward flow velocity. In addition to flushing the hole wall, it will also generate exciting pressure, further damaging the hole wall. In the specific case of drilling bucket lifting accident, a rotary drilling rig operator lifted the drilling bucket too quickly during construction in order to improve work efficiency, resulting in the collapse of the hole wall and causing serious economic losses.
（1） Preparation work before construction
Adequate preparation before the construction of the rotary drilling rig is the foundation for preventing collapse accidents. Familiarity with geological data is the primary task, and construction personnel should carefully study the geological survey report to comprehensively understand the geological structure, geotechnical properties, groundwater level, and other information of the construction site. For areas with unstable geological formations, such as quicksand, mudstone, shale, etc., special attention should be paid and corresponding response measures should be formulated. In the pile foundation construction of a subway station, the construction personnel knew in advance the existence of a quicksand layer underground through detailed analysis of geological data. Therefore, a targeted construction plan was formulated before construction, using high-quality mud wall protection and strengthening mud circulation measures, successfully avoiding the occurrence of collapse accidents.
Making a suitable length of casing is also crucial. The length of the casing should be determined based on geological conditions and the depth of the pile hole. Generally, the casing should penetrate unstable formations and enter stable formations to a certain depth to ensure effective protection of the borehole wall. The inner diameter of the casing should be 200-400mm larger than the pile diameter to facilitate the drilling of the drill bit and the lowering of the steel cage. When burying the casing, it is necessary to ensure its verticality and accuracy of position. The deviation between the center of the casing and the center of the pile position should not exceed 50mm, and the inclination of the casing should not exceed 1%. Clay should be layered and compacted around the casing to prevent mud leakage and casing displacement.
Choosing a suitable drill bit is equally essential. Different types of drill bits are required for different geological formations. For example, in cohesive soil layers, spiral drill bits can be used, which have strong cutting ability and soil removal performance; In sandy soil layers, it is advisable to use bucket tooth drill bits, which can effectively grasp sand and reduce disturbance to the hole wall; In rock formations, alloy drill bits or roller drill bits are needed to improve drilling efficiency and drilling quality. In the specific engineering case, the construction personnel selected the appropriate type of drill bit based on the geological conditions, greatly improving construction efficiency and reducing the risk of hole collapse.
（2） Key points of mud wall protection technology
Mud wall protection is a key technology for preventing collapse during the construction of rotary drilling rigs, and its performance indicators directly affect the effectiveness of wall protection. The preparation of mud should meet the requirements of "one low, two high, and three appropriate". One low "refers to the low sand content of the mud, which should generally be controlled within 4%. An excessively high sand content will reduce the viscosity and colloid rate of the mud, affecting the wall protection effect. 'Second high' refers to the high viscosity and colloid rate of the mud. Generally, the viscosity should be controlled between 18-28 seconds, and the colloid rate should not be less than 95%. Such mud can form a solid mud skin on the hole wall, effectively preventing the collapse of the hole wall. The "three appropriateness" includes appropriate specific gravity, acidity and alkalinity, and water loss. The specific gravity of mud is generally controlled between 1.02-1.10, and can be appropriately increased to 1.10-1.20 in easily collapsed formations; The pH value should be maintained between 8-11 to ensure the stability of the mud; The water loss should be controlled within 20mL/30min to prevent the rapid loss of water in the mud, which may cause the mud skin to dry and crack.
During the construction process, it is necessary to maintain the stability of various properties of the mud. The performance indicators of the mud, such as specific gravity, viscosity, sand content, etc., should be regularly tested, and the mix proportion of the mud should be adjusted in a timely manner based on the test results. During the drilling process, as the mud is recycled, its performance will change, such as an increase in sand content and a decrease in viscosity. At this time, it is necessary to timely supplement new mud or add treatment agents to maintain the stability of the mud's performance. At the same time, attention should be paid to the maintenance of the mud circulation system to ensure that the mud can circulate normally, and the drilling slag in the hole should be promptly taken out of the hole to prevent the accumulation of drilling slag in the hole, which will affect the performance of the mud and the quality of drilling.
（3） Drilling process control
The operational control during drilling is crucial for preventing hole collapse. The drilling speed should be reasonably controlled according to the geological conditions. In soft soil layers, the drilling speed can be appropriately increased, but it should not be too fast to avoid excessive disturbance to the borehole wall; In hard soil or unstable formations, the drilling speed should be reduced and the drilling should be done slowly to give the hole wall enough time to form a stable mud layer. Generally speaking, in cohesive soil layers, the drilling speed can be controlled at 1-2m/min; In sandy soil layers, the drilling speed should be controlled between 0.5-1m/min; In rock formations, the drilling speed is determined based on the hardness of the rock and the performance of the drill bit, and is usually slower.
The lifting speed of the drilling bucket also needs to be strictly controlled. If the lifting speed is too fast, negative pressure will be generated, which will cause suction on the hole wall and lead to its collapse; If the descent speed is too fast, it will generate exciting pressure, wash away the hole wall, and destroy the stability of the hole wall. The lifting speed of the drilling bucket should generally not exceed 0.5m/s, and the descending speed should not exceed 0.3m/s. When lifting the drill bucket, it should be slowly and uniformly lifted to avoid sudden acceleration or deceleration; When lowering the drill bucket, first lower it to a certain distance from the bottom of the hole, and then slowly lower it to prevent the drill bucket from directly impacting the bottom of the hole.
Limiting the rotation speed of the drilling bucket is also an important measure to prevent hole collapse. Excessive rotation speed of the drilling bucket can increase centrifugal force, leading to increased shear force on the hole wall and easily causing hole collapse. The rotation speed of the drilling bucket should be determined according to the geological conditions and the type of drilling bucket. Generally, in cohesive soil layers, the rotation speed can be controlled at 10-15 r/min; In sandy soil layers, the rotation speed should be controlled at 5-10r/min; In rock formations, the rotation speed should be lower to ensure the stability of the borehole.
（4） Emergency response measures after hole collapse
Once a collapse occurs, effective emergency measures should be taken immediately to reduce losses and ensure the safety of subsequent construction. If the collapse is not severe, the method of backfilling with concrete can be used for treatment. First, clean up the drilling debris and mud at the collapsed hole area, and then backfill low-grade concrete into the hole. The backfill height should be a certain distance beyond the collapsed hole area, usually 1-2m. After the concrete reaches a certain strength, the drilling operation can be resumed. When re drilling, attention should be paid to controlling the drilling parameters, strengthening the mud wall protection, and preventing the hole from collapsing again.
If the collapse of the hole is severe, the casing should be re buried. Firstly, all collapsed objects in the hole should be removed, and then the casing should be re buried at the original hole position. The burial depth of the casing should be increased compared to the original to ensure that it can effectively protect the hole wall. After burying the casing again, the verticality and position of the casing should be checked to ensure compliance with the requirements. Afterwards, prepare the mud again, adjust the performance indicators of the mud to meet the construction requirements, and then proceed with drilling operations.
In the process of dealing with collapse holes, it is necessary to conduct in-depth analysis of the causes of collapse holes, summarize experiences and lessons learned, take corresponding preventive measures, and avoid similar accidents from happening again. At the same time, it is necessary to strengthen the management of the construction site, strictly implement various operating procedures, improve the safety awareness and technical level of construction personnel, and ensure the safety and quality of rotary drilling rig construction.
The anti overturning and anti collapse operation specifications in the construction of rotary drilling rigs cover multiple key aspects, such as detailed inspection before operation, precise operation during operation, and effective response after accidents occur. A comprehensive inspection of the site and equipment before homework is like building the first line of defense for construction safety, ensuring the safety and stability of the construction environment and equipment status. Strictly following the operating points during the homework process is the core of ensuring construction safety. Whether it is walking, turning, or drilling, every detail is related to the stability of equipment and the safety of personnel. Taking timely and effective response measures in the face of severe weather reflects a full emphasis on the impact of natural factors, further reducing the risk of accidents. In terms of preventing collapse, careful preparation before construction, scientific application of mud wall protection technology, strict control of drilling process, and proper emergency response after hole collapse together constitute a complete safety guarantee system.
Strictly adhering to these operating standards is of immeasurable importance in ensuring the safety of rotary drilling rig construction. It is a solid shield that protects the lives and safety of construction workers, avoiding tragic casualties caused by accidents and allowing every construction worker to work in a safe environment. It can ensure the smooth progress of engineering projects, avoid engineering delays caused by safety accidents, ensure timely delivery of projects, and make positive contributions to the development of society. It can also effectively reduce economic losses, minimize the huge economic burden caused by equipment damage, engineering rework, etc., and improve the economic benefits of engineering projects.
Looking ahead to the future, with the continuous advancement and innovation of technology, construction safety technology is bound to experience even more vigorous development. In the field of rotary drilling rigs, intelligent safety monitoring systems are expected to be widely applied and deeply developed. Through the integration of advanced technologies such as sensors, the Internet of Things, and big data, these systems can monitor the operating status, construction environment parameters, and operator behavior of rotary drilling rigs in real-time and accurately. Once an abnormal situation is detected, the system can immediately issue an alarm and automatically take corresponding control measures to nip the hidden dangers of the accident in the bud. For example, when the tilt angle of the drilling rig approaches the danger threshold, the system can automatically adjust the extension and contraction length of the support legs to maintain the balance of the drilling rig; When abnormal mud performance indicators are detected, the system can promptly remind operators to make adjustments to prevent the occurrence of collapse accidents.
The research and application of new materials and processes will also bring new breakthroughs to the construction safety of rotary drilling rigs. Developing high-strength, lightweight, and corrosion-resistant materials for manufacturing key components of rotary drilling rigs will significantly improve the overall performance and stability of the equipment, and reduce the risk of safety accidents caused by equipment issues. In terms of construction technology, continuous exploration and innovation of safer and more efficient drilling techniques and wall protection technologies, such as the use of new mud additives, optimization of drilling sequence and methods, will further enhance the safety and quality of rotary drilling rig construction.
The safety awareness and technical level of operators will also be significantly improved with the continuous improvement of the safety education and training system. By conducting diversified and personalized training courses, such as virtual reality (VR) simulation training, online learning platforms, case analysis seminars, etc., operators can gain a deeper understanding of the safety operating procedures and emergency response methods of rotary drilling rigs, enhancing their safety awareness and ability to respond to emergencies in practical operations.
The construction safety of rotary drilling rig is a continuous process of development and improvement. We must always attach great importance to and strictly abide by existing operating standards, actively pay attention to and apply new technologies, materials, and processes, continuously improve the quality of operators, and jointly create a safer and more reliable environment for rotary drilling rig construction, promoting the healthy and sustainable development of the infrastructure construction industry.
