降雨入渗对树坪滑坡稳定性的影响研究  

Influence of Rainfall Infiltration on the Stability of Shuping Landslide

作　　者：张袆袆 孙林娜[1] 张兰阁 贺可强[1] 全恩厚 全恩伟 朱裕祥 吴远锋 ZHANG Huihui;SUN Linna;ZHANG Lange;HE Keqiang;QUAN Enhou;QUAN Enwei;ZHU Yuxiang;WU Yuanfeng(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033;Shandong Huatong Road and Bridge Engineering Co.Ltd.,Linyi 276000)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]山东华通路桥工程有限公司,山东临沂276000

出　　处：《土工基础》2021年第5期587-591,共5页Soil Engineering and Foundation

基　　金：山东省自然科学基金重点项目(ZR2020KE004);山东省自然科学基金项目(ZR2017PD011);国家自然科学基金资助项目(No.41372297);三峡库区地质灾害教育部重点实验室(三峡大学)开放基金项目(2017KDZ03);青岛地质工程勘察院开放基金项目(B2-2019-0300)。

摘　　要：运用有限元软件Geo-Studio分别模拟分析参数弱化和未弱化条件下滑坡的稳定性,研究了不同降雨类型参数弱化对树坪滑坡坡体含水率及稳定性的影响,结果表明,不同降雨类型下其坡体表层的含水率具有不同的变化规律;在一定降雨条件下,后期降雨强度愈大,边坡稳定性愈小;边坡稳定性的参数弱化效应的出现时间有所不同,降雨集中型和降雨减弱型发生在降雨中期,而降雨平均型和降雨增加型发生在降雨的后期。In this paper,the finite element software Geo-Studio was used to simulate and analyze the stability of landslides under weakened and unweakened conditions.The influence of parameter weakening of different rainfall types on the stability of Shuping Landslide was also studied.The results show that the water content of the slope surface varied with different rainfall types.Under the rainfall condition,the higher the rainfall intensity in the later period,the higher potential of the landslide instability.The appearance time of the parameter weakening effect was different.The concentration rainfall type and the rainfall attenuation type occurred in the middle of rainfall duration,the rainfall average type and rainfall increase type occurred in the later part of the precipitation.

关 键 词：降雨类型 参数弱化 边坡稳定性 含水率 降雨强度 

分 类 号：P642[天文地球—工程地质学]