Views: 0 Author: Site Editor Publish Time: 2026-07-14 Origin: Site
During the rainy season, the soil and environment for outdoor pile foundation construction undergo drastic changes. Rainwater infiltration can significantly soften the soil layer of the foundation pit, reduce the bonding strength of the soil, and at the same time, the construction site is muddy and waterlogged, and equipment is slippery, which can easily cause safety and quality problems such as drilling rig slippage, hole wall collapse, and equipment water ingress failure, seriously delaying the progress of pile foundation construction. The drilling operation of rotary drilling rig requires extremely high soil stability, construction site leveling, and equipment working condition stability. Compared with conventional weather construction, the risk and hidden dangers of rainy season construction are multiplied. The construction site should adhere to the core principle of prevention first and combining prevention and control, focusing on the three key aspects of equipment waterproofing, site anti-skid, and hole collapse prevention. Targeted technical control measures should be implemented to avoid common construction problems during the rainy season and ensure the quality and safety of pile foundation drilling.
During the rainy season, rainwater erosion and site waterlogging can easily cause water ingress and moisture damage to the electrical and hydraulic systems of rotary drilling rigs, leading to faults such as short circuits, oil leaks, and operational failures, which are the main reasons for equipment shutdown and damage. Before construction, it is necessary to conduct a comprehensive inspection of key parts such as the drilling rig cab, electrical control box, hydraulic pipeline joints, engine air inlet, etc. The sealing strips and waterproof cover plates should be checked for leaks and repaired, damaged parts should be replaced in a timely manner, and exposed electrical joints should be sealed with waterproof wrapping. During the construction process, if encountering moderate to heavy rain weather, the drilling operation should be stopped immediately, and the drilling rig should be parked in a flat area with high terrain and no potential water accumulation hazards. The electrical switches of the entire vehicle should be turned off, and the core equipment of the machine body should be covered. Before resuming work after rain, it is necessary to check the water accumulation and moisture situation of the machine body, dry the electrical control equipment, investigate the hidden danger of water ingress in the hydraulic system, and confirm that the equipment is in normal working condition before starting construction to prevent operations with faults.
During the rainy season, the soil at the construction site is soaked in rainwater, resulting in a significant decrease in bearing capacity. The ground is muddy and slippery, and the rotary drilling rig has a heavy weight and a wide range of operations, which can easily cause problems such as tilting of the machine body, sliding of the tracks, and settlement and deviation, directly threatening construction safety. In the early stage of the site, it is necessary to prepare a drainage plan in advance, excavate circular drainage ditches around the work area, and timely divert surface water to avoid long-term waterlogging in the work area. For muddy and soft sites, it is necessary to lay a layer of gravel, steel plates or slag soil, compact and level it, and then set up drilling machine operation points to improve the ground bearing capacity and anti slip performance. During the construction process, the operating speed of the drilling rig's alignment, lifting, and lowering should be strictly controlled to avoid operations such as sudden rotation, emergency stop, and load deviation. The levelness of the machine should be observed in real time, and any slight settlement or tilt should be immediately stopped and adjusted to prevent equipment from operating with hidden dangers.
Hole collapse is the most common quality problem in the construction of rotary excavation pile foundations during the rainy season. After rainwater seeps into the soil layer of the hole wall, the soil becomes saturated with water content and the structure becomes loose. Sand layers, silt layers, and backfill soil layers are prone to hole wall peeling and overall collapse, resulting in problems such as abandoned holes and rework. During construction, it is necessary to optimize the drilling process, shorten the exposure time of bare holes, and follow the principles of rapid drilling and timely hole protection. For weak and permeable formations, high-quality mud should be used in advance to protect the wall, adjust the mud density and viscosity reasonably, enhance the mud's support and anti-seepage effect on the hole wall, and prevent rainwater and groundwater from penetrating and eroding the hole wall. Continuous drilling is strictly prohibited during rainfall. The formed pile holes should be promptly covered with protective measures to prevent rainwater from directly entering the holes. After rain, the drilling speed should be slowed down to form holes, and the holes should be stabilized layer by layer and gradually drilled to avoid rapid disturbance of loose soil and avoid the risk of collapse from the source of the process.
The core difficulty of rotary drilling rig construction during the rainy season lies in the strong environmental uncertainty and high suddenness of risk hazards. The three control measures of waterproofing, anti-skid, and anti collapse holes complement each other and are indispensable. Equipment waterproofing ensures the stability of construction equipment, site anti slip construction strengthens the foundation of operational safety, and hole wall anti collapse controls the core quality of pile foundation engineering. The construction site needs to dynamically adjust the construction plan based on daily weather conditions, regularly inspect site drainage, equipment conditions, and hole stability, and strictly standardize the construction operation process. Through comprehensive pre prevention, in-process control, and post inspection, various hidden dangers in rainy season construction can be effectively resolved. On the premise of ensuring construction safety and pile foundation hole quality, the efficiency of rainy season pile foundation construction can be maximized.
