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Geotechnical and Geological Engineering

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25-10-2019 | Original Paper

Research on Application of Hydraulic Fracturing Enhanced Technology in Coal Mine

Authors: Zhixu Dai, Xiao Zhou

Published in: Geotechnical and Geological Engineering | Issue 2/2020

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Abstract

Coal and gas outburst accident is one of the critical disasters restricting the safety production of coal enterprises in China. To solve the problems of low permeability and difficulty in gas extraction, a hydraulic fracturing test was carried out according to the occurrence characteristics of coal and rock gas in Pingdingshan Coal Mine No. 12; and the change law of the gas concentration and flow rate after hydraulic fracturing were obtained through long-term monitoring. Based on the test results, the effect of hydraulic fracturing on gas permeability enhancement of coal and rock was analyzed. The results have shown that the gas content decreases obviously and yet the water content increases since the hydraulic fracturing test completed, which makes the effect of gas displacement remarkably. It not only provides a reference for implementing hydraulic permeability enhancement and enhanced extraction in deep high outburst mines but also provides safe and efficient production in mining.

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Title: Research on Application of Hydraulic Fracturing Enhanced Technology in Coal Mine
Authors: Zhixu Dai
Xiao Zhou
Publication date: 25-10-2019
Publisher: Springer International Publishing
Published in: Geotechnical and Geological Engineering / Issue 2/2020
Print ISSN: 0960-3182
Electronic ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-019-01107-5

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