Deformation and failure characteristics of anchorage structure of surrounding rock in deep roadway

查看全文 作　　者：Hongwen [1]Jing;Jiangyu [1,2]Wu;Qian [1,2]Yin;Ke [2]Wang

机构地区：[1]State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;[2]School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China

出　　处：《International Journal of Mining Science and Technology》索引2020年第30卷第5期,共12页

基　　金：supported by the National Natural Science Foundation of China(51734009);National Key Basic Research and Development Program of China(2017YFC0603001). 摘　　要：This paper investigated the stress evolution,displacement field,local deformation and its overall distribution,and failure characteristics of the anchorage structure of surrounding rock with different rockbolt spacing through the model experiments.The influences of the pre-tightening force and spacing of rockbolt on the support strength of the anchorage structure of surrounding rock were analyzed by the simulation using FLAC3D numerical software.The support scheme of the excavated roadway was then designed,and the effectiveness of this support scheme was further verified by the displacement measurement of the roadway.The results showed that the maximum displacement between the roof and floor of the west wing track roadway in Kouzidong coal mine,China is about 42 mm,and the maximum displacement between its both sides is about 72 mm,indicating that the support scheme proposed in this study can ensure the stability and safety of the excavated roadway. 关键词：Deep roadway Anchorage structure Deformation failure Stress evolution Loading capacity

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Deformation and failure characteristics of anchorage structure of surrounding rock in deep roadway

参考文献(27)

引证文献(28)

耦合文献(4950)

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