水诱发堆积层滑坡位移动力学参数及其在稳定性评价中的应用--以三峡库区黄腊石滑坡分析为例  

A displacement dynamics parameter of debris landslide induced by water and its application t o stability evaluation——Taking Huanglashi landslide in Three Gorges Reservoir area for example

作　　者：贺可强[1,2] 李相然[3] 孙林娜[1] 王思敬[4] 

机构地区：[1]青岛理工大学岩土工程研究所,青岛266033 [2]三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌443002 [3]烟台大学,烟台264005 [4]中国科学院地质与地球物理研究所,北京100083

出　　处：《岩土力学》2008年第11期2983-2989,共7页Rock and Soil Mechanics

基　　金：国家自然科学基金项目(No.40672182、40872184);三峡大学三峡库区地质灾害教育部重点实验室基金课题(No.2006KDZ07)资助

摘　　要：在系统分析堆积层滑坡的物质组成和失稳动因的基础上,运用加卸载响应比理论的基本原理,首次提出了将月降雨量及其变化作为该滑坡的加卸载参数,相应月平均位移速率及其变化值为加卸载响应参数,由此所确定的位移加卸载响应比作为堆积层滑坡的位移动力学参数。并根据三峡库区降雨量与堆积层边坡位移相关关系论证了应用该位移动力学参数评价堆积层边坡稳定性的可行性和有效性。最后,运用加卸载响应比动力学参数对三峡库区黄腊石滑坡排水工程实施前后的稳定性进行了评价,评价结果与该边坡排水工程前后的稳定性变化相吻合。这表明了加卸载响应比位移动力学参数是堆积层边坡稳定性评价的一种有效位移动力学参数,可以运用该位移动力学参数对该类边坡的稳定性进行评价与预测。Based on systematic analysis of the composition and mechanism of the debris landslides, this paper first proposes that the monthly rainfall and its change can be selected as the load-unload dynamical parameter, the average displacement velocity and its changes as the dynamical response parameter to load-unload and the displacement load-unload response ratio as the displacement dynamics parameter of debris landslide induced by water in term of the principle of the load-unload response ratio theory. Meanwhile on the basis of analysis of the data of the displacement and rainfall of the debris landslides in the Three Gorges Reservoirs area, the feasibility and effectiveness of the displacement dynamics parameter are discussed. Finally, the stability of Huanglashi slope in the Three Gorges area before and after the water drainage are evaluated respectively by means of the dynamical parameter of the load-unload response ratio; and the evaluated results are well agreed with the practical stability situation of the slope. Therefore, all results above show that the dynamical parameter of load-unload response ratio proposed is a very effective displacement dynamical parameter in the stability evaluation of debris slopes; and it can be used in the evaluation of the stability of debris landslides induced by water.

关 键 词：堆积层滑坡 位移动力学参数 加卸载响应比 黄腊石滑坡 

分 类 号：TU459[建筑科学—岩土工程]