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《Coal Science and Technology》 2014-01
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Study on Roof Bolting with Anchor and Wire Mesh Coupling Support Technology in Weakly Consolidated Soft Rock Roadway

WANG Wei-ming;GAO Xin;JING Ji-dong;LIU Cheng-liang;ZHOU Ji-hua;School of Civil Engineering & Architecture,Shandong University of Science and Technology;Xinwen Mining Group( Yili) Energy Development Company Limited;Yili No. 1 Mine,Xinwen Mining Group( Yili) Energy Development Company Limited;  
In order to solve the support difficult problem of weakly consolidated soft rock roadway,this paper took weakly consolidated soft rock roadway of Yili No. 1 Mine as a study object,combined physical- mechanical properties and primary rock stress test results,roof bolting with anchor and wire mesh coupling support scheme was introduced by optimizing support parameters on the basis of analyzing the major causes of deformation and failure of roadway surrounding rocks. On the premise of verifying the reliability of the new support scheme by using numerical simulation,the three stages of roadway surrounding rock deformation was summarized. According to field observation and analysis after applied the new support scheme,which were the influence stage of roadway excavation,deformation limited stage and steady deformation stage. The results showed that roof- to- floor average convergence was 50 mm,rib- to- rib average convergerce was 23 mm, the time of deformation steady reduced to 15 days,roof bolting with anchor and wire mesh coupling support could control roadway surrounding rock deformation effectively,improve the state of surrounding rock stress and mobilize the bearing capacity of surrounding rock in depth adequately.
【Fund】: 国家自然科学基金资助项目(51174128)
【CateGory Index】: TD353
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