What are the main functions of a fully hydraulic tunnel drilling rig
The core function of a fully hydraulic tunnel drilling rig is to complete drilling operations related to geological exploration, engineering construction, and disaster prevention in confined spaces such as underground tunnels and tunnels. With the advantage of hydraulic drive, it adapts to complex tunnel environments.
The core function of a fully hydraulic tunnel drilling rig is to complete drilling operations related to geological exploration, engineering construction, and disaster prevention in confined spaces such as underground tunnels and tunnels. With the advantage of hydraulic drive, it adapts to complex tunnel environments.
Core role classification
Its role revolves around the three core requirements of exploration, construction, and safety assurance in underground engineering, which can be specifically divided into the following categories:
1. Geological exploration and resource exploration
This is the most fundamental function of a fully hydraulic tunnel drilling rig, used to obtain underground geological information and resource data.
Geological logging drilling: Drilling construction geological exploration holes, identifying the lithology, thickness, attitude, and geological structure of the surrounding rock layers of the roadway through coring, logging, and other methods, providing geological basis for roadway design and construction.
Resource exploration drilling: In mining tunnels, exploration or verification holes are constructed for mineral resources such as coal and metal mines to explore resource reserves, distribution ranges, and occurrence states, and guide mining planning.
Hydrogeological drilling: constructing hydrological observation holes, pumping test holes, identifying the distribution, water level, water inflow and other hydrogeological conditions of underground aquifers, and evaluating water hazard risks.
2. Mining engineering and underground construction
Undertaking key auxiliary drilling operations in mining and underground engineering construction.
Gas extraction drilling: In gas containing mines such as coal mines, large-diameter and long-distance gas extraction holes are constructed to extract gas from coal seams and surrounding rocks, reduce underground gas concentration, and prevent gas explosion accidents.
Grouting reinforcement drilling: When the surrounding rock of the tunnel is broken, has poor stability, or there is a risk of water inflow or sudden water influx, grouting holes are constructed to inject cement slurry or other grout into the rock fissures to reinforce the surrounding rock and block water channels.
Exploration and drainage drilling: Following the principle of "prediction and forecasting, investigation must be carried out if there are doubts, exploration before excavation, and treatment before mining", construction of exploration and drainage holes should be carried out before tunnel excavation to explore the distribution of water bodies ahead, drain accumulated water in advance, and ensure excavation safety.
Blasting mining borehole: In underground mining operations, it is used in some scenarios to construct blasting holes and provide hole positions for blasting operations in ore mining.
3. Disaster prevention and safety monitoring
To provide guarantees for the safe operation of underground engineering, for disaster prevention, control, and monitoring.
Fire prevention and extinguishing drilling: In coal mines and other prone to spontaneous combustion mines, fire prevention and extinguishing drilling is carried out by injecting inert gas, chemical inhibitors or grouting to prevent coal seam spontaneous combustion and control underground fires.
Emergency rescue drilling: When accidents such as collapse and water seepage occur underground, it can be used to construct life detection holes, rescue passage holes, or material delivery holes to provide support for rescue work.
Safety monitoring drilling: Construction monitoring holes, equipped with displacement, stress, water level and other monitoring sensors, long-term monitoring of the stability of the surrounding rock and hydrological changes in the roadway, and real-time warning of safety risks.
4. Other special drilling operations
Undertake some special drilling tasks according to different underground engineering requirements.
Ventilation and exhaust drilling: Construct ventilation holes in underground tunnels and tunnels to improve the ventilation conditions of underground spaces and exhaust harmful gases.
Pipeline laying drilling: used for small drilling in the surrounding rock layers of tunnels, laying cables, water pipes and other pipelines.
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