詹家湾滑坡地质特征及其稳定性分析评价  

Geological Characteristics and Stability Evaluation for Zhanjiawan Landslip

作　　者：卢邦华[1] 巨广宏[2] 张强[2] 

机构地区：[1]广东省地震局,广州市510070 [2]成都理工大学环境与土木工程学院

出　　处：《勘察科学技术》2006年第3期38-41,共4页Site Investigation Science and Technology

摘　　要：詹家湾滑坡为三峡库区典型的堆积层滑坡,总结该滑坡的发育特征并分析评价其稳定性,对于研究库区同类滑坡具有借鉴意义。基于大量勘探资料,该文从滑坡空间形态、滑坡物质组成及结构特征、滑坡水文地质、滑带土物理力学性质、滑坡成因机制分析、滑坡变形特征等多个方面揭示了詹家湾滑坡的地质特征,并在此基础上按自重、地表荷载、库水位从175m降至145m、地震5、年一遇暴雨等各种工况组合对滑坡稳定性进行了计算,最后综合分析和评价了该滑坡稳定性。分析认为现阶段滑坡处于不稳定状态,须进行工程处理。Zhanjiawan landslip is a typical talus slide in the reservoir area of Three Gorges project and summarizing developed characteristics of the slide and evaluating its stability is directory and referenced for research of similar slides of reservoir area. Based on abundant investigation data, the paper revealed geological characteristics of the landslip from aspects of spatial shape, physical components, structural characteristics, hydrogeological conditions, physical and mechanical properties for slip band soil, analysis of slide＇s forming mechanism and so on. Consequently, the slide stability is computed according to different engineering conditions of deadweight, upper load, reservoir level falling from 175m to 145m, earthquake, rainstorm of five-year cycle and their combination. Finally, the paper aggrcgately analyses and evaluates slide stability. According to above mentioned analysis and computation, the landslip is in unstable condition at present and needed to carry out engineering improvement.

关 键 词：滑坡 地质特征 变形特征 计算工况 稳定性 

分 类 号：P642.22[天文地球—工程地质学]