三峡库区高切坡典型破坏模式研究及其在白岩沟坡中的应用  

TYPICAL FAILURE MODES OF HIGH-CUTTING SLOPS AND ITS APPLICATION ON YANWANQIAO WEST SLOPE IN THREE GORGES RESERVOIR REGION,CHINA

作　　者：杨雨亭 赵萌[2] YANG Yu-ting1 , ZHAO Meng2(（1. Faculty of Land and Resources Engineering,Kunming University of Science and Technology, Kunming 650093,China; 2. School of Engineering, China University of Geosciences)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]中国地质大学(武汉)工程学院,武汉430074

出　　处：《地质灾害与环境保护》2018年第1期54-59,共6页Journal of Geological Hazards and Environment Preservation

摘　　要：由于安置数目较多的移民导致的用地需要,三峡库区产生了大量的因人工开挖而形成的高切坡,这些高切坡的不稳定性也时刻威胁着人民群众的生命财产安全。因此,总结概括了3种三峡库区高切坡的典型破坏模式,分别为倾倒破坏、圆弧破坏、剪切滑移破坏。基于这3种典型破坏模式,以白岩沟坡为例,预测其潜在的破坏模式。为了达到这一目的,文中结合钻孔倾斜仪数据(位移场)和SIGMA/W软件进行数值模拟(应力场)。结果表明白岩沟坡的破坏模式与剪切滑移破坏一致,其可能的破坏模式经GPS数据验证,进一步证明了该分析方法的可行性。Numerous high-cutting slopes were formed by artificial excavation in Three Gor- ges Reservoir region as the result of the incessant resettlement of a large number of people, and the instability of the high-cutting slopes may probably result in the loss of life and prop- erties. In this thesis, three typical failure modes for high-cutting slopes in the Three Gorges Reservoir region are summarized, respectively topping failure, circular failure and shear slip- ping failure. Based on the typical failure modes, Baiyangou slope is taken as a project case to predict the potential failure mode. For this destination, the borehole inclinometer data （dis- placement field） and numerical simulation by SIGMA/W （stress field） are combined to ana- lyze. The result indicates that the failure mode of the Baiyangou slope identifies with the shear slipping failure, and the possible failure mode is further validated by the GPS data and the result proves to be feasible.

关 键 词：高切坡 破坏模式 白岩沟坡 监测数据 SIGMA/W 

分 类 号：P642[天文地球—工程地质学] TU457[天文地球—地质矿产勘探]