加卸载响应比在某水库滑坡稳定性分析中的应用

滑坡加卸载响应比理论是一种基于非线性理论可用于滑坡失稳预测的新方法,目前加卸载响应比理论已经较成功运用于降雨型堆积层滑坡中进行预测预报,但该理论在水库型堆积体滑坡稳定性交化规律中的研究较少,本文以三峡库区某堆积层滑坡为研究对象,利用加卸载响应比理论的基本原理,以月库水变化量及对应的月水平位移速率分别作为滑坡的加卸载参数和加卸载响应参数,建立滑坡库水位-位移加卸载响应比预测模型.计算结果表明,该模型能应用于滑坡的稳定性变化规律研究中.

The Application of Loading-unloading Response Ratio Theory to Stability Analysis of a Reservoir Type Landslide

Loading-unloading response ratio theory is a new method used to predict the instability of landslide based on the nonlinear theory. The key to landslide forecast with the loading-unloading response ratio theory is the selection of loading-unloading measures and response parameters. At present the loading-unloading re- sponse ratio theory has been successfully applied to predicting the rainfall-induced and accumulation landslide; but this theory is rarely used to study the variation rule of the stability of the reservoir accumulation land- slide. This text researches on a typical reservoir accumulation landslide in the Three Gorges Reservoir area; on the basis of systematic analysis about the material composition and basic characteristics of the accumulation landslide, using the basic principles of loading-unloading response ratio theory, putting the reservoir water level variation by month as loading-unloading parameters, and correspondingly putting monthly average rate of displacement as displacement response parameters, establishing accumulation landslide reservoir water lev- el- displacement loading-unloading response ratio prediction model. The results show that the loading-unloa- ding response ratio theory prediction model can accurately reflect the rule of stability change of reservoir accu- mulation landslide.