长江科学院院报2016，Vol.33Issue(6)：99-104,6.DOI:10.11988/ckyyb.20150169
复合型滑坡推力计算方法研究
A Method of Calculating the Thrust of Complex Landslide
摘要
Abstract
Complex landslide is the combination of load⁃caused landslide and retrogressive landslide, with the char⁃acteristics of both load⁃caused landslide and retrogressive landslide. Through research on the formation mechanism of complex landslide, we reveal that complex landslide successively experiences the failure modes of retrogression in the front side, load in the backside, penetration of slip zone in the middle, and finally global sliding instability. Correspondingly, we divide complex landslide into three zones: start area in the leading edge (tractive effect), main slide area in the middle, and start area in the trailing edge ( loading effect) . According to the failure modes and mechanical characteristics of different areas, as well as the interaction among these areas, we establish a calcu⁃lation model of geomechanics, and derive the thrust of the three areas in detail. The thrust calculation for different areas should be specific. For the calculation of leading edge start area and trailing edge start area, their interactions with the main sliding area should be considered. And the stability of the main sliding area plays a dominant role in the whole landslide. It is necessary to consider the absence of slide⁃resistance of the leading edge start area and also the loading effect of the trailing edge start area. Calculation example of a typical complex landslide proves the ra⁃tionality of the thrust calculation method. This research provides a reference for the prevention and control of com⁃plex landslide.关键词
复合型滑坡/变形破坏模式/地质力学计算模型/推力计算/条块受力分析Key words
complex landslide/deformation and failure mode/geomechanical model/calculation of thrust/stress a-nalysis of slices and blocks分类
天文与地球科学引用本文复制引用
谭福林,胡新丽,张玉明,方堃,李蕊..复合型滑坡推力计算方法研究[J].长江科学院院报,2016,33(6):99-104,6.基金项目
国家重点基础研究发展计划“973”项目（2011CB710604）；国家自然科学基金项目 （）
