井下多分支钻孔治理导水断层技术研究与应用

doi:10.19286/j.cnki.cci.2023.08.017

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Abstract Aiming at the problem that the DF201 water conducting fault in Tangjiahui Mine affected the safe excavation of the return air roadway of No.61202 Face, in order to find out the water conducting condition of the fault, eliminate the threat of water outburst, and reasonably arrange the working face, the directional drilling technology was used to explore and control the DF201 fault. A total of 11 directional drilling holes were drilled in the floor, with a total footage of 2 544 m, which confirmed that the fault conducted the Ordovician limestone water in the floor. Through the drilling grouting process, the water conducting faults and cracks were sealed, and 431.85 t of cement was injected cumulatively. The total water outflow near the fault was reduced to about 10 m3 / h, which effectively reduced the risk of water outburst from the fault and provided a favorable guarantee for the safe excavation of the roadway.

Key words： water conducting fault directional drilling technology Ordovician limestone water drilling grouting

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	Articles by authors
	Xiao Qian
	Wang Bo
	Liu Weiwei

Cite this article:

Xiao Qian,Wang Bo,Liu Weiwei. Research and application of underground multi-branch drilling technology for water conducting fault control[J]. CCI, 2023, 46(8): 71-75.

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http://www.mtyhg.com.cn/EN/10.19286/j.cnki.cci.2023.08.017 OR http://www.mtyhg.com.cn/EN/Y2023/V46/I8/71

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