水库型滑坡稳定性影响因素敏感性分析  

SENSITIVITY ANALYSIS OF FACTORS AFFECTING STABILITY OF RESERVOIR LANDSLIDE

作　　者：周云[1] 刘洪华 贺可强[1] ZHOU Yun;LIU Honghua;HE Keqiang(School of Civil Engineering,Qingdao University of Technology,Shandong Qingdao 266500,China;Qingdao Geo-Engineering Survering Institute(Qingdao Geological Exploration Development Bureau),Shandong Qingdao 266500,China)

机构地区：[1]青岛理工大学,山东青岛266500 [2]青岛地质工程勘察院(青岛地质勘察开发局),山东青岛266000

出　　处：《低温建筑技术》2023年第9期40-43,共4页Low Temperature Architecture Technology

基　　金：山东省自然科学基金重点项目(ZR2020KE004);青岛地质工程勘察院开放基金资助项目(2019-QDDZYKF02)。

摘　　要：为明确水库型滑坡稳定性主控因素,文中以树坪滑坡为研究对象,基于Geo-Studio软件及正交试验法,以滑坡稳定性系数为敏感性分析指标,对影响边坡稳定性的多重因素进行综合性敏感性分析。研究结果表明,影响滑坡稳定性系数因素的敏感性排序从大到小依次为内摩擦角、黏聚力、降雨强度、渗透系数、库水位下降速率、重度;树坪稳定性系数与黏聚力和内摩擦角呈正向关系,与降雨强度呈负向关系;边坡库水位由175m下降到145m的过程中,边坡稳定性系数呈先减小再增大的趋势,且始终低于初始值,转折点均位于160m处。研究成果可为类似边坡稳定性评价提供参考。Shuping landslide is taken as the research object to clarify the main controlling factors of reservoir land⁃slide stability.Taking the landslide stability coefficient as the sensitivity analysis index,the comprehensive sensitivi⁃ty analysis of multiple factors affecting slope stability is carried out by Geo-Studio software and Orthogonal Test method.The results show that the order of sensitivity factors affecting landslide stability from large to small is inter⁃nal friction angle,cohesion,rainfall intensity,permeability coefficient,reservoir water level falling rate,and specific weight.The stability coefficient of Shuping landslide has a positive relationship with cohesion and internal friction angle,and a negative relationship with rainfall intensity.When the water level of the slope reservoir drops from 175m to 145m,the slope stability coefficient decreases first and then increases,which is always lower than the ini⁃tial value,and the turning point is at 160m.The research results may provide the reference for similar slope stability evaluation.

关 键 词：水库型滑坡 敏感性分析 正交试验法 

分 类 号：TU413.6[建筑科学—岩土工程]