| Issue |
E3S Web Conf.
Volume 385, 2023
2023 8th International Symposium on Energy Science and Chemical Engineering (ISESCE 2023)
|
|
|---|---|---|
| Article Number | 01009 | |
| Number of page(s) | 8 | |
| Section | Energy Development and Utilization and Energy Storage Technology | |
| DOI | https://doi.org/10.1051/e3sconf/202338501009 | |
| Published online | 04 May 2023 | |
Study on Gas Drainage Technology in Goaf of Steep Seam
1 School of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054
2 Key Laboratory of Western Mine Mining and Disaster Prevention, Ministry of Education, Xi’an 710054
a Yangsg@xust.edu.cn
b* 1172171241@qq.com
c 2416171640@qq.com
d 3313221522@qq.com
Aiming at the problem of gas control in the upper corner of steeply inclined coal seam, taking 3103 working face of a mine as an example, this paper determines the height range of fracture zone by combining theoretical empirical formula with on-site investigation of microseismic monitoring technology, designs the parameters of drainage borehole during production, and analyzes the gas drainage effect of long-strike borehole through on-site experiments. The results show that the average gas extraction concentration of the long borehole along the strike of 3103 working face is 53.55%, and the average gas extraction purity is 5.37 m3/min. After treatment, the gas concentration in the upper corner is about 0.4%, and the concentration in the return air roadway is about 0.3%, which ensures the control effect of gas extraction quantity.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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