QIU Decai, WU Guisheng, CHEN Dongdong, TANG Zhilong. Compound-hydraulic technology enhancing permeability in lowly permeable and outburst-prone seam[J]. COAL GEOLOGY & EXPLORATION, 2015, 43(1): 13-16. DOI: 10.3969/j.issn.1001-1986.2015.01.003
Citation: QIU Decai, WU Guisheng, CHEN Dongdong, TANG Zhilong. Compound-hydraulic technology enhancing permeability in lowly permeable and outburst-prone seam[J]. COAL GEOLOGY & EXPLORATION, 2015, 43(1): 13-16. DOI: 10.3969/j.issn.1001-1986.2015.01.003
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Compound-hydraulic technology enhancing permeability in lowly permeable and outburst-prone seam

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  • In order to increase the permeability and improve gas extraction rate of the outburst-prone coal seam, this paper puts forward the compound-hydraulic technology, introduces the principle and system composition of the technology. The engineering test shows that the gas drainage quantity of compound-hydraulic technology increased by 3.37 times and 2.80 times more than that of single-hydraulic technology, and gas concentration increased 3.35 times and 2.64 times respectively.
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