| Issue |
E3S Web Conf.
Volume 257, 2021
5th International Workshop on Advances in Energy Science and Environment Engineering (AESEE 2021)
|
|
|---|---|---|
| Article Number | 03026 | |
| Number of page(s) | 4 | |
| Section | Environmental Monitoring Repair and Pollution Control | |
| DOI | https://doi.org/10.1051/e3sconf/202125703026 | |
| Published online | 12 May 2021 | |
Experimental Study on the Temporal and Spatial Variation Law of Gas Flow in Different Rock Pillar Drainage Boreholes
1
National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing 400037
2
China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400037
* Corresponding author’s e-mail: boaidajia2007@126.com
In order to study the temporal and spatial variation of gas flow in different rock pillar extraction boreholes, gas pressure, gas content, gas emission from 100-meter coal holes and coal seam permeability coefficient were measured on site. The site inspected the gas flow in the boreholes at 15m, 7.5m, directly above, 7.5m, and 15m at the lower slab of different rock pillar floor roadways. It analyzed the change law of gas flow in boreholes of 710 floor lanes and 505 floor lanes, which provided a basis for the layout of gas drainage boreholes.
© The Authors, published by EDP Sciences, 2021
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