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Application of high-pressure water jet technology and the theory of rock burst control in roadway

查看全文 作　　者：Yang [1]Zengqiang;Dou [2]Linming;Liu [1]Chang;Xu [3]Mengtang;Lei [3]Zhen;Yao [4]Yahu 高影响力作者 机构地区：[1]College of Resource & Safety Engineering, China University of Mining & Technology, Beijing 100083, China;[2]State Key Laboratory of Coal Resources & Mine Safety, China University of Mining & Technology, Xuzhou 221116, China;[3]College of Mining Engineering, Guizhou Institute of Technology, Guiyang 550003, China;[4]China Coal Technology & Engineering Group Chongqing Research Institute, Chongqing 400039, China高影响力机构 出　　处：《International Journal of Mining Science and Technology》索引2016年第26卷第5期,共7页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China (Nos. 51574243, 51404269);the Fundamental Research Funds for the Central Universities of China (No. 2014XT01);Guizhou Science and Technology Foundation of China (No. 20152072);the Priority Academic Program Development of Jiangsu Higher Education Institutions, China (No. SZBF2011-6B35) 摘　　要：This paper puts forward using high-pressure water jet technology to control rock burst in roadway, and analyzes the theory of controlling rock burst in roadway by the weak structure zone model. The weak structure zone is formed by using high-pressure water jet to cut the coal wall in a continuous and rotational way. In order to study the influence law of weak structure zone in surrounding rock, this paper numerically analyzed the influence law of weak structure zone, and the disturbance law of coal wall and floor under dynamic and static combined load. The results show that when the distance between high-pressure water jet drillings is 3 m and the diameter of drilling is 300 mm, continuous stress superposition zone can be formed. The weak structure zone can transfer and reduce the concentrated static load in surrounding rock, and then form distressed zone. The longer the high-pressure water jet drilling is, the larger the distressed zone is. The stress change and displacement change of non-distressed zone in coal wall and floor are significantly greater than that of distressed zone under dynamic and static combined load. And it shows that the distressed zone can effectively control rock burst in roadway under dynamic and static combined load. High-pressure water jet technology was applied in the haulage gate of 250203 working face in Yanbei Coal Mine, and had gained good effect. The study conclusions provide theoretical foundation and a new guidance for controlling rock burst in roadway. 关 键 词：High-pressure water jet technology Rock burst Weak structure zone Dynamic and static combined load
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