深埋节理岩体隧洞开挖与支护的3DEC模拟  

Three-dimensional Element Code Simulation of High Buried Depth Joint Rock Tunnel Excavation and Bolt Support

作　　者：王振[1] 韩春[1] 贾超[1] 郭瑞[1] 

机构地区：[1]山东大学土建与水利学院,山东济南250061

出　　处：《水电能源科学》2013年第6期150-152,共3页Water Resources and Power

基　　金：国家自然科学基金资助项目(41272325);山东省优秀中青年科学家科研奖励基金资助项目(BS2011NJ012)

摘　　要：针对埋深大、结构面复杂的隧洞稳定性及支护效果,应用离散元法对建立的节理岩体隧洞模型分别模拟隧洞开挖与支护后的隧洞围岩应力及位移变化。结果表明,隧洞开挖后围岩变形稍大,并需考虑地下水对隧洞围岩的影响,需对隧洞进行支护处理;支护后的隧洞围岩位移变形减小,围岩稳定性得到增强。The stability and support effect of the tunnel has highly buried depth and is passed through by complex structure planes.Based on the established joint rock tunnel model,three-dimensional discrete element method is adapted to simulate the variation of surrounding rock displacement and stress response after excavation and bolting support,respectively.The results show that the deformation of surrounding rock appears a little large after excavation;it is necessary to consider the influence of underground water on the tunnel rock;the tunnel need to be supported;the displacement of tunnel rock decreases after being supported,and the stability of the tunnel surrounding rock is enhanced.

关 键 词：节理岩体隧洞 开挖 3DEC 锚杆支护 模拟 离散元法 

分 类 号：TV554[水利工程—水利水电工程]