文献类型：期刊文章

作　　者：徐冬[1] 胡祥云[1] 单春玲[1] 李睿恒[1]

机构地区：[1]中国地质大学(武汉)地球物理与空间信息学院,地球内部多尺度成像湖北省重点实验室,武汉430074

出　　处：《Applied Geophysics》

基　　金：funded by the National Basic Research Program of China(973 Program)(No.2013CB733203);the National Natural Science Foundation of China(No.41474055)

年　　份：2016

卷　　号：13

期　　号：1

起止页码：1-12

语　　种：中文

收录情况：AJ、CSA、CSA-PROQEUST、CSCD、CSCD2015_2016、EBSCO、GEOREFPREVIEWDATABASE、IC、INSPEC、JST、PA、PROQUEST、SCI(收录号：WOS:000374099000001)、SCI-EXPANDED(收录号：WOS:000374099000001)、SCIE、SCOPUS、WOS、普通刊

摘　　要：The dynamic monitoring of landslides in engineering geology has focused on the correlation among landslide stability,rainwater infiltration,and subsurface hydrogeology.However,the understanding of this complicated correlation is still poor and inadequate.Thus,in this study,we investigated a typical landslide in southwestern China via time-lapse electrical resistivity tomography（TLERT） in November 2013 and August 2014.We studied landslide mechanisms based on the spatiotemporal characteristics of surface water infiltration and flow within the landslide body.Combined with borehole data,inverted resistivity models accurately defined the interface between Quaternary sediments and bedrock.Preferential flow pathways attributed to fracture zones and fissures were also delineated.In addition,we found that surface water permeates through these pathways into the slipping mass and drains away as fissure water in the fractured bedrock,probably causing the weakly weathered layer to gradually soften and erode,eventually leading to a landslide.Clearly,TLERT dynamic monitoring can provide precursory information of critical sliding and can be used in landslide stability analysis and prediction.

关 键 词：time-lapse electrical resistivity tomography  LANDSLIDE HYDROGEOPHYSICS MONITORING preferential flow  

分 类 号：P642.22] P631.322]