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- W2185253349 abstract "In the gas mine or gas and coal outburst mine, the gas in upper corner is the key to the matter of the production safety, and the high drill gas drainage technology is a fre quently-use treatment measure in a working face. Ho w to determine the scope of fracture zone is very important to thi s technology. In this paper, we designed a method t o test the scope of fracture zone of different position in working face , according to the arrangement characteristics of w orking face, furthermore, we verified veracity of the test by fi eld experimentation. The results show that at the d ifferent position in the working face, the scope of fracture zone is dif ferently, and with the increase of distance to the return airway, the gas drainage concentration was increasing, the scop e of fracture zone was to be higher. With the extra cting of the working face, the drainage drills’ position will be under to the scope of fracture zone gradually, the n, the gas drainage concentration will be reduced." @default.
- W2185253349 created "2016-06-24" @default.
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- W2185253349 date "2014-01-01" @default.
- W2185253349 modified "2023-09-26" @default.
- W2185253349 title "The scope of fracture zone measure and high drill g as drainage technology research" @default.
- W2185253349 hasPublicationYear "2014" @default.
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