考虑地下水影响的大华滑坡塌岸预测  

Prediction of bank collapse in Dahua landslide considering influence of groundwater

作　　者：王乐华[1] 王家成[1] 杨姗姗[1] 陈星[2] 

机构地区：[1]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 [2]中国长江三峡集团公司枢纽管理局,湖北宜昌443002

出　　处：《水利水电科技进展》2012年第1期58-61,共4页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(50909052);湖北省教育厅科学研究计划基金(Q20091301)

摘　　要：针对目前塌岸预测方法多属于经验性或半经验性、简化了水文地质条件的影响而存在无法清楚了解塌岸和地下水影响之间确切关系的问题,在考虑地下水影响的基础上,综合应用极限平衡搜索预测法和FLAC3D数值模拟预测法两种数值模拟方法,对大华桥水库大华滑坡进行了塌岸预测,并与传统的卡丘金法预测结果进行了对比分析。结果表明,极限平衡搜索预测法和FLAC3D数值模拟预测法在大华滑坡这种滑移型塌岸中的预测结果较为接近和合理,考虑地下水影响下的数值模拟塌岸预测方法对滑移型塌岸的预测是可行与有效的。The current methods for predicting bank collapse are mostly empirical or semi-empirical,which simplify the influence of hydrogeological conditions and can not precisely depict the relationship between the bank collapse and the influence of groundwater.Considering the influence of the groundwater,two numerical methods,the limit equilibrium prediction method and the FLA3D method, are employed to predict the possibility of bank collapse in Dahua landside of Dahuaqiao Reservoir,and a contrastive analysis is carried out with the traditional Kachugin method.It is shown that the results obtained by the limit equilibrium prediction method and the FLAC3D method are close and rational,and the numerical simulation for predicting bank collapse considering the influence of the groundwater is feasible and effective.

关 键 词：滑坡 塌岸预测 极限平衡搜索 FLAC3D 卡丘金法 大华滑坡 大华桥水库 

分 类 号：P642.22[天文地球—工程地质学]