地下水位变动对永善县城东部滑坡稳定性的影响研究  

Study on the Influence of Groundwater Level Changes on the Stability of Landslides in the East of Yongshan County

作　　者：马浩翔 徐世光[1,2] 宰西 马振同 张世涛 MA Haoxiang;XU Shiguang;ZAI Xi;MA Zhentong;ZHANG Shitao(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Yunnan Geological and Mineral Engineering Survey Group Co.,Ltd.,Kunming 650093,Yunnan,China;Yunnan Institute of Geological Survey,Kunming 650216,Yunnan,China;Tianjin Geo-Engineering Investigation Institute,Tianjin 300191,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]云南地矿工程勘察集团公司,云南昆明650093 [3]云南省地质调查院,云南昆明650216 [4]天津市地质工程勘察院,天津300191

出　　处：《水力发电》2023年第5期45-50,共6页Water Power

基　　金：国家自然科学基金-云南联合基金(U1502231)。

摘　　要：以云南省永善县城东部古滑坡为研究对象,基于野外勘察资料、地表水及地下水观测资料、水质分析试验结果并结合该滑坡的发育特征,采用GeoStudio数值模拟地下水位变动,对该滑坡稳定性进行分析。结果表明,除降雨外,生活污水下渗为地下水位上升的主要因素,地下水位抬高,致使滑坡稳定性降低;滑块稳定性系数与地下水位变幅呈负相关;地下水潜蚀作用,引发碎石、块石压密变形,加大地面建筑物的变形,促使滑块复活。Taking the Paleolandslide in the east of Yongshan County of Yunnan Province as the research object,the GeoStudio is used to numerically simulate the change of groundwater level and analyze the stability of landslide based on the field survey data,surface water and groundwater observation data,water quality analysis test results and the development characteristics of landslide.The results show that,(a)in addition to rainfall,the infiltration of domestic sewage is the main factor for the rise of groundwater level,and the rise of groundwater level reduces the stability of the landslide;(b)the stability coefficient of slide is negatively correlated with the variation of groundwater level;and(c)the subduction effect of groundwater triggers the compression and dense deformation of debris and blocks,increases the deformation of ground buildings,and promotes the resurrection of the slide.

关 键 词：古滑坡 稳定性分析 地下水位变化 影响 GeoStudio 永善县 

分 类 号：P642.22[天文地球—工程地质学]