川藏公路102滑坡滑动带力学参数的反分析  

BACK ANALYSIS OF SLIP SURFACE OF THE 102 LANDSLIDE ON SICHUAN—TIBET HIGHWAY

作　　者：廖秋林[1] 杨志法[1] 尚彦军[1] 张路青[1] 

机构地区：[1]中国科学院地质与地球物理研究所工程地质力学重点实验室,北京100029

出　　处：《岩石力学与工程学报》2004年第24期4119-4123,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家重点基础研究发展规划(973)项目(2002CB412702);中国科学院知识创新工程(KZCX2-306)资助课题。

摘　　要：滑动带力学参数是滑坡研究中的关键与难点所在,这一点在川藏公路沿线的大多数松散堆积体滑坡的稳定性评价中尤为突出。基于对 102 滑坡进行的大量现场调查和滑动带原状土采样,通过三轴剪切试验和滑动带力学参数的反分析 2 种方法研究了滑坡滑动带力学参数。对所得结果验算和对比后可知,滑动带力学参数的反分析是确定滑坡滑动带力学参数的理论上可行、实际上有效的方法。The parameters of slip surface prove to be crucial and difficult in the study of landslides, especially for many landslides in loose deposit on the Sichuan-Tibet highway. Based on various field investigations, the mechanisms of landslides in these deposits are similar. Hence, a typical study is given in this paper on the mechanical parameters of the slip surface of the 102 Landslide on the Sichuan-Tibet highway, and the procedure to obtain these parameters is described. The original sample from the slip surface of the 102 Landslide was obtained and its mechanical parameters were given by triaxial compression tests and back analysis method. By comparison of the results of two procedures, it is shown that back analysis method can determine more accurately the mechanical parameters of the whole slip surface. It is indicated that back analysis is a feasible and effective approach to examine the parameters of the slip surface.

关 键 词：工程地质 川藏公路 反分析 滑动带 

分 类 号：P642[天文地球—工程地质学]