| Issue |
E3S Web Conf.
Volume 329, 2021
4th International Conference on Green Energy and Sustainable Development (GESD 2021)
|
|
|---|---|---|
| Article Number | 01089 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/e3sconf/202132901089 | |
| Published online | 09 December 2021 | |
Study on Pre Pumping and Outburst Elimination Technology of “one hole and two elimination” in Bedding Directional Long Drilling
1 Chongqing Research Institute CO., Ltd of China Coal Technology Engineering Group, Chongqing, China
2 Anhui University of Science and Technology, Huainan 232001, China
3 National Key Laboratory of Gas Disaster Monitoring and Emergency Technology, Chongqing, China
* Corresponding author: 2012156@cqccteg.com
Aiming at the problem of gas control in the working face and the roadway to be excavated at the same time due to the small construction length of bedding borehole under the condition of the occurrence of soft coal, a technology of "one hole and two elimination" pre-drainage to eliminate gas outburst by using air screw motor drilling was put forward, and the field test was carried out in the 17102(3) working face of Pansu Coal Mine.The results show that this technology can effectively control the borehole trajectory, ensure the uniform and reasonable range of borehole outburst elimination, solve the problems of long gas treatment cycle caused by the construction of gas treatment roadway, improve the effective drainage time of borehole, ensure enough time and space for gas treatment, and be beneficial to the mining and replacement of mine.
© The Authors, published by EDP Sciences, 2021
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