-
-
-
-
Honor
-
-
-
-
-
Contact
-
What are the main methods of coal mine gas control?
Release time:
2022-11-11
Author:
Source:
What are the main methods of coal mine gas control?
- What are the main methods of coal mine gas control?
What is the method of coal mine gas control? The major classification of coal mine gas control is air drainage and drainage.
First of all, it is necessary to ensure that the air volume of each air-using site is sufficient to prevent gas accumulation. Then there is high-intensity gas drainage, more drilling, dense drilling, strict drainage, regional gas control has mining protective layer and gas drainage in this coal seam(layer penetration, bedding), local advanced drainage drilling, etc. The gas content in the coal seam can be reduced by drainage, thereby reducing the risk of coal and gas outburst.
At present, the main means of prevention and control is the construction of close-distance through-layer drilling combined with bedding drilling pre-drainage coal seam gas. Usually, the method of increasing the drainage of coalbed methane in coal mines is mainly to increase the density of boreholes and reduce the spacing of boreholes to improve the amount of gas drainage in coal seam boreholes, but it greatly increases the construction volume and construction period of boreholes, and the cost will increase exponentially.
Therefore, how to improve the utilization rate of drilling, so as to provide a high gas extraction rate, economic benefits, easy construction of drilling seam gas extraction method is an urgent need to solve the problem.
This article is reproduced from the Internet, if there is infringement, please contact delete.
Key words:
Method, gas, borehole, coal seam, coal mine, governance, construction, improve, reduce
Previous Page
Previous Page:
