个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:President of international exchange committee of the Chinese Society of Rock Mechanics and Engineering CSRME
其他任职:国际岩石力学与岩石工程学会(ISRM)中国国家小组副主席
性别:男
毕业院校:东北大学
学位:博士
所在单位:土木工程系
办公地点:综合实验四号楼330
联系方式:tca@mail.neu.edu.cn
Microseismic monitoring and stability analysis of the left bank slope in Jinping first stage hydropower station in southwestern China
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论文类型:期刊论文
发表时间:2011-09-01
发表刊物:INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
收录刊物:Scopus、SCIE、EI
卷号:48
期号:6
页面范围:950-963
ISSN号:1365-1609
关键字:Microseismic monitoring; Stability analysis; High rock slope; Jinping first stage hydropower station; Prediction
摘要:Risks associated with the left banks lope of Jinping first hydro power station in south western China are growing as a result of excavation of the dam foundation ditch and various tunnels, as well as grouting to soft strata. To improve our understanding of the slope instability and resolve the complex subsurface conditions of the highly fractured rock mass, a microseismic monitoring system was installed in June 2009, which is the first time such a technique has been introduced in to stability analysis of a high steep rock slope in China. The micro seismic monitoring system consists of a data acquisition unit, a data processing unit and a three-dimensional array of uniaxial accelerometers. In order to analyze the correlation between seismicity and potential slip surface of the slope, a numerical model was implemented to analyze the failure processes and stability of the slope. The monitoring results illustrate that microseismic events mainly occur as a strip along the spandrel groove of the dam, which coincides with the potential slipsurface obtained from numerical analysis, especially at the bottom of the slope. Therefore, the comprehensive method incorporating microseismic monitoring and numerical analysis has been proven to be very promising in instability prediction of rock slope subject to identification and delineation of potential slip surface and failure regions. (C) 2011 Elsevier Ltd. All rights reserved.