Applicability of Time Domain Reflectometry for Yuhuangge Landslide Monitoring  

作　　者：晏鄂川 宋琨 李红刚 

机构地区：[1]Three Gorges Research Center for Geo-hazard, Ministry of Education [2]Faculty of Engineering, China University of Geosciences [3]The 3rd Railway Survey and Architecture Institute

出　　处：《Journal of Earth Science》2010年第6期856-860,共5页地球科学学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 40672189);the Ministry of Land and Resources of China (No. SXJC-3ZH1D1_[2009]003);the National Basic Research Program of China (973 Program) (No. 2011CB710605)

摘　　要：Yuhuangge （玉皇阁） landslide in Wushan （巫山）, Chongqing （重庆）, is one of the focal monitoring geological hazards in the Three Gorges Reservoir. Time domain reflectometry （TDR） and in-place inclinometers were arranged to monitor the deep deformation. Time domain reflectometry is based on transmitting an electromagnetic pulse into a coaxial cable grouted in rock or soil mass and watching for reflections of this transmission due to cable deformity induced by the ground deformation. Comparing the monitoring data of No. 5 Station, in the middle profile of the landslide, from June to December of 2008, the depth of slip surface determined by TDR is -33.58 m, which is consistent with the geological condition of the borehole nearby. The deformation curve trend of the TDR and inclinometer is similar, and it is uniform with the deformation caused by the Three Gorges Reservoir 175 m experimental impoundment. Further, TDR can monitor the tiny deformation accurately. Therefore, TDR is applicable to monitor the Yuhuangge landslide deep deformation and reflect the deformation characteristics well. It is significant to promote the application of TDR in landslide monitoring.Yuhuangge （玉皇阁） landslide in Wushan （巫山）, Chongqing （重庆）, is one of the focal monitoring geological hazards in the Three Gorges Reservoir. Time domain reflectometry （TDR） and in-place inclinometers were arranged to monitor the deep deformation. Time domain reflectometry is based on transmitting an electromagnetic pulse into a coaxial cable grouted in rock or soil mass and watching for reflections of this transmission due to cable deformity induced by the ground deformation. Comparing the monitoring data of No. 5 Station, in the middle profile of the landslide, from June to December of 2008, the depth of slip surface determined by TDR is -33.58 m, which is consistent with the geological condition of the borehole nearby. The deformation curve trend of the TDR and inclinometer is similar, and it is uniform with the deformation caused by the Three Gorges Reservoir 175 m experimental impoundment. Further, TDR can monitor the tiny deformation accurately. Therefore, TDR is applicable to monitor the Yuhuangge landslide deep deformation and reflect the deformation characteristics well. It is significant to promote the application of TDR in landslide monitoring.

关 键 词：time domain reflectometry Yuhuangge landslide APPLICABILITY deformation monitoring fluctuation of reservoir level. 

分 类 号：P642.22[天文地球—工程地质学] S152.7[天文地球—地质矿产勘探]