-
-
-
-
Honor
-
-
-
-
-
Contact
-
Three Common Drilling Technologies for Coal Mines-Yiguang Technology
Release time:
2021-03-23
Author:
Source:
The safe production of coal mine is inseparable from the application of drilling technology. At present, the common coal mine drilling technology mainly includes geological exploration technology, gas drainage technology, drilling grouting technology, etc.; the commonly used equipment includes geological exploration drilling rig, coal mine drilling rig, full hydraulic tunnel drilling rig, etc. Rational use of coal mine drilling technology can not only improve production efficiency, but also prevent the occurrence of many mine accidents. With the development of science and technology, coal mine drilling technology is constantly improving, from the traditional drilling technology to the development of modern science and technology. 1. Geological exploration technology Geological exploration is the core component of coal mine drilling technology, mainly for geological structure, soil soft
The safe production of coal mine is inseparable from the application of drilling technology. At present, the common coal mine drilling technology mainly includes geological exploration technology, gas drainage technology, drilling and grouting technology, etc;
Commonly used equipment includes geological exploration drilling rig, coal mine drilling rig, full hydraulic tunnel drilling rig, etc. Rational use of coal mine drilling technology can not only improve production efficiency, but also prevent the occurrence of many mine accidents.
With the development of science and technology, coal mine drilling technology is constantly improving, from the traditional drilling technology to the development of modern science and technology.
1. Geological exploration technology
Geological exploration is the core component of coal mine drilling technology. It mainly grasps the geological structure, soft and hard properties of soil, formation lithology, groundwater characteristics and ore body distribution. At the same time, various parameters and hydrogeological materials are collected through geotechnical and water sampling tests, hydrogeological experiments or gas pressure tests, so as to provide reliable theoretical basis for geological exploration design and construction.
2. Gas drainage technology
In coal mines, most of the coal and coalbed methane are associated minerals, if it is related to the mining of coal, it is necessary to stop the release of gas adsorbed in coal. In the process of coal mining, when a large amount of gas is released, it is necessary to enhance the air volume to ensure the safety of the staff and avoid the occurrence of serious accidents caused by excessive gas. In order to ensure safe production, we must adhere to the principle of "first pumping and then mining, monitoring and control, and setting production by wind". Before the formal mining of the coal seam, the drilling rig is used to drill the coal seam, and the gas pre-drainage work is carried out with the help of the drilling. Try to reduce the gas content in the coal seam, ensure that the gas does not exceed the standard, and finally realize the purpose of safe production.
3. Drilling grouting technology
In the process of coal mining, coal spontaneous combustion and other phenomena are sometimes encountered. In order to effectively prevent spontaneous combustion of coal in goaf, it is necessary to drill grouting first, drill holes from the ground or underground roadway through drilling rig, and pour materials or slurry with fire extinguishing performance into dangerous areas to reduce the harm of coal spontaneous combustion. This technology has also been applied in the goaf of some mines in China, through the drilling rig drilling from the ground to the overlying strata to produce the separation layer fissure zone, the injection of cement paste, to control the surface collapse or the role of rock layer down, effectively protect the surface facilities.
Key words:
