Research on hydraulic slotting technology controlling coal-gas outbursts  

作　　者：魏国营 单智勇 张子敏 

机构地区：[1]School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454002,China [2]Jiaozuo Coal Industry (Group) Corporation Pty Ltd.,Jiaozuo 454000,China [3]School of Resource and Safety Engineering,China University of Mining & Technology(Beijing),Beijing 100083,China

出　　处：《Journal of Coal Science & Engineering(China)》2008年第1期67-72,共6页煤炭学报（英文版）

基　　金：National Nature Science Foundation of China(50534070);International Science and Technology Cooperation and Communion Key Project of Ministry Science and Technology of China(2005DFA61030);Natural Science Foundation of Henan Province(200510460014);Coal Mine Gas and Fire Prevention and Control Key Laboratory Foundation of Henan Province(HKLGF200708)

摘　　要：Measured to control serious coal-gas outburst in coal seam were analyzed by theory and experimented in test site.A new technique to distress the coal-bed and drain methane,called hydraulic slotting,was described in detail,and the mechanism of hydrau- lic slotting was put forward and analyzed.The characteristic parameter of hydraulic slotting was given in Jiaozuo mining area and the characteristic of validity,adaptability and secu- rity was evaluated.The results show that the stress surrounding the strata and the gas in coal seam is released efficiently and thoroughly while new techniques are taken,as slot- ting at heading face by high pressure large diameter jet.The resistance to coal and gas outbursts is increased dramatically once the area of slotting is increased to a certain size. In the process of driving 2 000 m tunnel by hydraulic slotting excavation,coal and gas outburst never occurre.The technique could be used to prevent and control potential coal-gas outburst in the proceeding of tunnel driving,and the speed tunneling could be as high as more than 2 times.Measured to control serious coal-gas outburst in coal seam were analyzed by theory and experimented in test site. A new technique to distress the coal-bed and drain methane, called hydraulic slotting, was described in detail, and the mechanism of hydrau- lic slotting was put forward and analyzed. The characteristic parameter of hydraulic slotting was given in Jiaozuo mining area and the characteristic of validity, adaptability and secu- rity was evaluated. The results show that the stress surrounding the strata and the gas in coal seam is released efficiently and thoroughly while new techniques are taken, as slot- ting at heading face by high pressure large diameter jet. The resistance to coal and gas outbursts is increased dramatically once the area of slotting is increased to a certain size. In the process of driving 2 000 m tunnel by hydraulic slotting excavation, coal and gas outburst never occurre. The technique could be used to prevent and control potential coal-gas outburst in the proceeding of tunnel driving, and the speed tunneling could be as high as more than 2 times.

关 键 词：coal-gas outburst hydraulic slotting outburst prevention and control meas-ures high pressure large diameter jet heading excavation 

分 类 号：TD713[矿业工程—矿井通风与安全]