渝怀铁路白马一号隧道进口高位危岩体稳定性分析  

Stability Analysis of High-steep Perilous Rock Mass at the Entrance of Baima No.1 Tunnel on Chongqing—Huaihua Railway

作　　者：赵彪 胡昌文 戴智颖 金昶睿 ZHAO Biao;HU Changwen;DAI Zhiying;JIN Changrui(China Railway Eryuan Engineering Group(Chongqing)Survey,Design and Research Co.,Ltd.,Chongqing 400023,China;Shenzhen Integrated Transportation Design Research Institute Co.,Ltd.,Shenzhen 518003,Guangdong,China;School of Civil Engineering,Central South University,Changsha 410075,China)

机构地区：[1]中铁二院重庆勘察设计研究院有限责任公司,重庆400023 [2]深圳市综合交通设计研究院有限公司,广东深圳518003 [3]中南大学土木工程学院,长沙410075

出　　处：《路基工程》2023年第2期211-215,共5页Subgrade Engineering

摘　　要：以渝怀铁路白马一号隧道进口高位危岩边坡中的具有代表性的#1危岩体为研究对象,采用极限平衡法及离散单元法评估#1危岩的稳定性。结果表明:极限平衡法计算便捷,但无法计算模型内部的应力、位移、速度等变化情况,且无法考虑多个结构面的相互影响;离散单元法模拟结果更贴近现实情况,但计算结果易受建模精度及模型参数的影响。两种计算结果均表明#1危岩在自然状态下处于基本稳定状态。Taking the representative#1 perilous rock mass in the high-steep perilous rock slope at the entrance of Baima No.1 Tunnel on Chongqing—Huaihua Railway as the research object,the stability of#1 perilous rock is evaluated by using limit equilibrium method and discrete element method.The results show that though the limit equilibrium method is convenient,it can not calculate the changes of stress,displacement,velocity,etc.in the model,and can not take the interaction of multiple structural planes in to account,while the simulation results of discrete element method are more real,but the calculation results are more susceptible to the influence of modeling accuracy and model parameters.Both calculation results show that#1 perilous rock is basically stable in natural state.

关 键 词：离散单元法 极限平衡法 危岩体 滑移失稳 稳定性评估 

分 类 号：P642[天文地球—工程地质学]