九龙水库库区索桥滑坡体稳定性研究  

Stability Study of Jiulong Reservoir Rope Bridge Landslide

作　　者：屈龙[1] 吴祖国[1] 王跃帮[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《资源导刊（地球科技版）》2015年第9期40-43,共4页

摘　　要：九龙水库距大坝450m的索桥左岸覆盖层堆积体，由下岸坡地形较陡，其下卧的岩层倾向坡外，且接触带为强风化软弱结构面，在地下水的长期活动下，造成与基岩接触面强度不断降低；任自重应力长期作用下，受暴雨或地震等因素影响，推动下部及前缘覆盖层向河床临空面滑动剪出，形成了索桥推移式覆盖层滑坡。本文从地质背景出发，根据地质调查、勘探、实验等资料及数据，选取合理的滑坡相关参数，运用毕肖普法、简布法、斯宾雍法、美国陆军工程师团法等进行计算，对其稳定系数计算结果进行比对分析，研究该滑坡体的稳定性及其对大坝安全的影响程度。the deposit layer on the left bank of the dam bridge is 450m away from Jiulong reservoir, and due to steep terrain of the bank slope and the long-term groundwater activity, tile strength of interface with bedrock decreased, And under the effect of gravity stress for a long time, also influenced by factors such as hurricanes or earthquakes, the covering layer landslide are formed. Based on geological background and according to the geological investigation, exploration and experiment information and the data, with the reasonable selection of landslide related parameter, this paper uses bishop method, Janbu metho, spencer method, the United States army engineering division method to comparatively analyze the stability coefficient calculation re.its, and studies the stability of the landslide and its influence on dam safety degree.

关 键 词：滑坡体 形成机制 稳定性 大坝安全 

分 类 号：P642.22[天文地球—工程地质学]