Views: 0 Author: Site Editor Publish Time: 2025-10-10 Origin: Site
During the infrastructure boom of skyscraper construction and extended transportation networks in cities, the "environmental friendliness" and "efficiency" of construction equipment have gradually become the core standards for evaluating engineering quality. Traditional drilling equipment often faces problems such as "slurry overflow, noise disturbing residents, and prolonged construction periods", while rotary drilling machines, with their unique technical design, have broken the misconception that "efficiency necessarily means high energy consumption and environmental friendliness necessarily means low efficiency", and have become the "main force" of current green infrastructure. How exactly does it achieve the dual breakthrough of "environmental friendliness" and "efficiency"? The answer lies in the process innovation and technical details.
The environmental advantages of rotary drilling machines go beyond simply "reducing emissions". They represent a "green reconstruction" from the construction source to the entire operation cycle, precisely addressing the three major pollution problems of traditional drilling machines:
1. "Slimming down" of slurry usage: Say goodbye to the "slurry pond siege", reducing water and soil pollution. Traditional rotary drilling machines rely on the "slurry walling" process, during which large slurry ponds need to be excavated. A large amount of slurry not only occupies the site (the area of a medium-sized project's slurry pond can reach several hundred square meters), but is also prone to leakage and overflow, polluting the soil and groundwater. After the project is completed, cleaning the slurry pond is also time-consuming and labor-intensive.
The rotary drilling machine, on the other hand, focuses on the "dry hole formation" or "low slurry walling" process: in stable soil layers such as clay and silt, soil can be directly extracted through the rotating drill bit without any slurry; even in complex soil layers such as sand and gravel, only a small amount of "stabilizing fluid" (the amount is only 1/5 to 1/10 of that of traditional drilling machines) is needed, and the stabilizing fluid can be recycled and reused, significantly reducing slurry emissions. Taking a subway project as an example, using the rotary drilling machine resulted in a reduction of slurry usage by more than 80%, without any water and soil pollution issues, and the construction site did not require large-scale excavation of slurry ponds, saving 30% of temporary land.
2. "Reducing noise": From "disturbing noise" to "low-noise operation", adapting to urban scenarios. The "roaring sound" of traditional drilling machines is a major problem in urban construction - diesel engines operate at high speed and slurry pumps work continuously, with noise often exceeding 90 decibels. During the day, it affects the business operations of surrounding merchants, and at night, it disturbs the rest of residents. Many projects were forced to suspend construction due to noise complaints.
The rotary drilling machine solves this problem through three "noise reduction designs": First, it is equipped with low-noise engines (such as ISUZU and Cummins IV/V engines in mainstream models), with operating noise 15-20 decibels lower than that of traditional drilling machines; second, the power transmission system is optimized, using shock-absorbing rubber pads and soundproof covers to wrap key components, reducing mechanical vibration noise; third, the "intermittent operation" feature - the drill bit extracts soil during operation, and the hoist only works during the lifting and unloading process, avoiding the continuous "24-hour roaring" of traditional drilling machines. In a downtown bridge renovation project, the noise level during daytime operation of the rotary drilling machine was controlled within 70 decibels, and at night, it dropped below 60 decibels, fully meeting the urban construction noise standards, achieving "construction without disturbing residents".
3. "Double reduction" of energy consumption and emissions: Keeping up with environmental protection standards, reducing carbon footprint. With the advancement of the "dual carbon" policy, the energy consumption and emissions of construction equipment have become important assessment indicators. Traditional drilling machines have high energy consumption due to outdated power systems and low energy conversion rates, with each cubic meter of hole drilling consuming up to 15-20 degrees of energy, and their exhaust emissions often do not meet standards.
The rotary drilling machine achieves breakthroughs through "intelligent energy-saving technology": On the one hand, it adopts electronically controlled engines + variable hydraulic systems, which can automatically adjust power output according to the drilling load - reducing speed during soil drilling to save fuel, and increasing torque during rock drilling to ensure efficiency, with a comprehensive energy consumption reduction of 20% to 30% compared to traditional drilling machines; on the other hand, mainstream rotary drilling machines all comply with the latest national emission standards (such as IV and V standards), and some models can be equipped with "electric power packs" to achieve zero exhaust emissions. Taking the Sany SR235 rotary drilling machine as an example, its fuel consumption per cubic meter of hole drilling is only 8-10 liters, reducing by nearly half compared to traditional drilling machines, and it can reduce over 10 tons of carbon emissions per year during construction.
The "efficiency" of the rotary drilling machine is not merely about "speeding up", but rather achieved through "technical empowerment" to ensure "fast drilling, accurate positioning, and fewer reworkings", thereby shortening the construction period overall. Especially, it is well-suited for infrastructure projects that require "accelerated construction and quality assurance".
1. "Speed-up" in drilling: The torque and rotational speed are matched to handle complex geological conditions. The drilling speed is a core factor affecting construction efficiency. Traditional drilling machines, due to their small power head torque and fixed rotational speed, are slow when drilling in soft soil layers and get stuck when drilling in hard rock layers. On average, they can only drill 1-2 meters per hour. The "core technology of the power head" of the rotary drilling machine completely changes this situation: its rated torque can reach 150-400 kN·m (for example, the power head of XCMG XR360 rotary drilling machine has a torque of 360 kN·m), and the rotational speed can be adjusted continuously between 5-35 rpm - when dealing with soft soil layers, the high rotational speed (25-35 rpm) cuts through the soil quickly, allowing for a drilling speed of 5-8 meters per hour; when encountering moderately weathered rock layers, the high torque (above 300 kN·m) combined with the rock drill bit can easily break the rock, with the drilling speed being 3-5 times that of traditional drilling machines. In a highway bridge pylon construction project, the rotary drilling machine completed 12 pylon holes with a diameter of 1.5 meters and a depth of 30 meters in a single day, while traditional drilling machines could only complete 3-4 holes in the same time, reducing the construction period by two-thirds.
2. "Zero rework" in operations: Precise control reduces ineffective time. Traditional drilling machines often encounter "drill hole deviation" and "reduction in diameter" problems due to difficult control of the mast's verticality and low accuracy of hole depth and diameter, requiring repeated corrections or even re-drilling. Ineffective time accounts for more than 20% of the total construction period. The rotary drilling machine achieves "precise operation" through an "intelligent control system": first, it is equipped with an electronic leveler and verticality sensor, which displays the mast deviation in real time, with an accuracy of 0.3%, avoiding drill hole deviation; second, it is equipped with a depth counter and drill bit capacity calibration function, with hole depth error controlled within ±5 cm and hole diameter error within ±1 cm, eliminating the need for secondary corrections; third, some high-end models support "automatic positioning", using GPS or Beidou system to align the pile position within 3 minutes after startup, saving 10-15 minutes per pile compared to manual positioning. In a 120-pile foundation project of a high-rise building, the rotary drilling machine achieved 100% qualification rate and no rework, exceeding the planned construction period by 15 days.
3. "Extremely compressed" auxiliary time: Rapid relocation + convenient tool change, enhancing continuous operation efficiency. The "auxiliary time" of traditional drilling machines (moving, changing drill tools, cleaning the site) is high. For example, moving the mast requires disassembling and hoisting for transportation, taking 2-3 hours each time; changing drill tools requires manual disassembly of bolts, taking 30-40 minutes. The "track-type chassis + modular design" of the rotary drilling machine significantly reduces auxiliary time: the track-type chassis can rotate 360°, and adjusting the pile position only takes 5-10 minutes, and the cross-pile displacement machine takes no more than 30 minutes; drill tools use "quick connection", replacing the drill bit and spiral drill rod only takes 10-15 minutes, saving more than 70% compared to traditional drilling machines; some models also come with a "drill bit automatic cleaning device", eliminating the need for manual soil cleaning after the drill, further reducing downtime. In an underground pipe gallery project, the rotary drilling machine worked continuously for 10 hours in a single day, with auxiliary time accounting for only 1 hour, increasing the effective operation time by 50% compared to traditional drilling machines.
The environmental friendliness and high efficiency of rotary drilling machines are not independent of each other; instead, they form a "synergistic effect": The environmental-friendly process reduces the time for pollution treatment (such as eliminating the need to clean up a large amount of mud), further enhancing the overall efficiency; the efficient operation shortens the construction period and reduces the total amount of continuous emissions from the equipment. This "win-win" characteristic precisely aligns with the current development direction of infrastructure towards "greening and intensification" - in urban core areas, ecological sensitive zones, etc., rotary drilling machines can not only meet the environmental requirements of "low pollution and low noise", but also ensure the progress of the project schedule; in large-scale infrastructure projects, their efficient characteristics can reduce the cost of single-pile construction, and their environmental characteristics can reduce the subsequent treatment costs, achieving "economic and ecological benefits in double harvest".
From the "lax construction" of traditional drilling machines to the "green and efficient" of rotary drilling machines, it is not only an iteration of equipment technology, but also an upgrade of the development concept of the infrastructure industry. With the further integration of intelligent and electric technologies, in the future, rotary drilling machines will go further on the path of "environmental protection" and "efficiency", becoming the "pillar force" that drives the high-quality development of China's infrastructure.
