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《Coal Mine Machinery》 2017-11
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Study on Large Deformation Mechanism and Control of Deep Soft Rock Chamber

WU Xin;JIA Wen-ming;ZHANG Jian-guo;CHEN Kai;Pingdingshan Tian'an Coal Mining Co., Ltd.;Chongqing Research Institute Co., Ltd.,China Coal Technology and Engineering Group;Institute of Energy and Chemical Industry,China Pingmei Shenma Group;State Key Laboratory of Coking Coal Resources Development and Comprehensive Utilization,China Pingmei Shenma Group;  
Deep soft rock roadway,chamber deformation and damage problems become more and more prominent, has not been completely resolved. The problem of deformation and failure of the chamber of-350 m high and low pressure water conversion equipment in Pingdingshan No.4 mine is studied.Through the methods of on-site observation and theoretical analysis,puts forward the synergetic support of grouting+high strength prestressed anchor+anchor+mesh reinforcement. According to the engineering practice, the support scheme can effectively control the deformation and damage of the chamber,solve the complicated process of the next support and undercover repair under the original support condition,and ensure the stable operation of the equipment in the chamber and the personnel safety.
【Fund】: 科技部“十二五”科技支撑计划项目(2012BAK04B00)
【CateGory Index】: TD354
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