| Issue |
E3S Web Conf.
Volume 245, 2021
2021 5th International Conference on Advances in Energy, Environment and Chemical Science (AEECS 2021)
|
|
|---|---|---|
| Article Number | 01021 | |
| Number of page(s) | 4 | |
| Section | Energy Development and Utilization and Energy-Saving Technology Application | |
| DOI | https://doi.org/10.1051/e3sconf/202124501021 | |
| Published online | 24 March 2021 | |
Technology of eliminating outburst by downward drilling in highground pressure and serious outburst area
1 State Key Laboratory of The Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing 400037, China
2 China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing 400037, China
* Corresponding author: 2013178@cqccteg.com
The high-drainage roadway construction face of the working face is used to pre-drill the borehole under the tunneling face, and the problem of poor water return in the hole is solved by grouting the surrounding rock cracks in the deep and shallow holes of the drill floor. The “two plugs and one note” sealing method was adopted to ensure that the sealing holes were tight and airtight; the water pipes were blown all the way in the hole, and the single hole, grouping and timed water blowing work targets were realized, and the drilling effect of the downhole drilling was improved. A set of efficient and rapid down-drilling and hole-dissipation management mode has been formed, which has achieved the goal of high-efficiency outburst of coal seams and technical and economic integration in areas with high ground pressure and serious safety and economic benefits.
© The Authors, published by EDP Sciences, 2021
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