Experimental Study on Permeability Characteristics of Soft Coal under Higher Confining Pressure

doi:10.4028/www.scientific.net/AMR.402.588

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	Experimental Study on Permeability Characteristics of Soft Coal under Higher Confining Pressure
	Chen Shaojie 1,2; Guo Weijia 2; Wang Hailong 2; Sun Xizhen 2; Shi Junwei 2
	2012
会议日期	DEC 23-25, 2011
会议地点	Beihai, PEOPLES R CHINA
关键词	Low-strength coal Plastic-flow Permeability Characteristics Complete stress-strain Confining pressure
卷号	402
DOI	10.4028/www.scientific.net/AMR.402.588
页码	588
英文摘要	In order to study permeability characteristics of low-strength coal under higher confining pressure, complete stress-strain permeability characteristics tests on 15# coal of Shanxi Province Qinshui Basin are conducted. Research shows that 15# coal manifests obvious plastic under 6MPa confining pressure whose uniaxial compressive strength is 7.43MPa; The saturated specimen' permeability reduces provisionally during initial compression as the native fractures are closed; With the specimen compressed continuingly, new fractures appear and those fractures connect, then the permeability rapidly increase; But while the soft coal enters into plastic-flow state, because that the specimen becomes more homogeneous and fractures have closed, the permeability greatly reduces lower then the initial value. Research result has important guiding significance for reasonable retaining waterproof pillar in deep mining.
源文献作者	Zhu, HX ; Wang, LJ
会议录	ADVANCES IN METALLURGICAL AND MINING ENGINEERING
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	DURNTEN-ZURICH
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS记录号	WOS:000308830000113
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4672]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.State Key Lab Mine Disaster Prevent & Control
推荐引用方式 GB/T 7714	Chen Shaojie,Guo Weijia,Wang Hailong,et al. Experimental Study on Permeability Characteristics of Soft Coal under Higher Confining Pressure[C]. 见:. Beihai, PEOPLES R CHINA. DEC 23-25, 2011.