西南某水电站坝址区左岸高边坡变形机理及动力稳定性分析

英文篇名：Deformation Mechanism and Dynamic Stability Analysis of High Slope at the Dam Area of a Hydropower Station,Southwest China
中文刊名：北京工业大学学报
英文刊名：Journal of Beijing University of Technology
作者：魏云杰 ; 许模 ; 陶连金 ; 王文沛
英文作者：WEI Yun-jie1 ; 2 ; XU Mo3 ; TAO Lian-jin1 ; 2 ; WANG Wen-pei1(1.Key Laboratory of Urban Security and Disaster Engineering ; Ministry of Education ; Beijing University of Technology ; Beijing 100124 ; China ; 2.Key Laboratory of Earthquake Engineering and Structural Retrofit ; Beijing University of Technology ; Beijing 100124 ; China ; 3.State Key Laboratory of Geohazard Prevention & Geoenvironment Protection ; Chengdu University of Technology ; Chengdu 610059 ; China)
中文关键词：岩体结构 ; 高边坡 ; 变形机理 ; 动力稳定 ; 工程效应
英文关键词：rock structure ; high slope ; deformation mechanism ; dynamic stability ; engineering effects
出版日期：2012-07-10
机构：北京工业大学城市与工程安全减灾教育部重点实验室;北京工业大学工程抗震与结构诊治北京市重点实验室;成都理工大学地质灾害与地质环境保护国家重点实验室;
年：2012
期：07
出版单位：北京工业大学学报

摘要

现场调查表明,岩体经历了复杂的岩浆活动和多期构造作用,白鹤滩坝区左岸主要存在3种变形破坏模式,即正常卸荷型、陡裂夹泥型、缓倾角错动带的表生改造型;对边坡岩体结构特征、岩体风化及物理力学性质等特征进行了细致研究;在此基础上,运用动力离散元数值模拟,揭示了在地震作用下边坡变形破裂发生规律和变形发展模式,对其动力稳定性及可能引起的工程效应进行了综合评价.
Site investigation shows that the rock mass has experienced a complex magmatic activity and multi-phase tectonic processes.There are mainly three types of deformation and failure modes on the left bank,including normal unloading,intercalated gouge in steep crack,and epigenetic reformation in low-angle dislocation interfaces.The paper reveals the occurrence regularity and development of displacement of such slope through dynamic discrete element numerical simulation in the earthquake,based on the detailed studies of the structure type of slope rock,composition of rock structures,rock weathering and physical and mechanical properties.Finally,the dynamic stability and the possible engineering effects of high slopes are comprehensively evaluated.

引文

[1]黄润秋,张倬元,王士天.论岩体结构的表生改造[J].水文地质工程地质,1994,21(4):1-61.HUANG Run-qiu,ZHANG Zhuo-yuan,WANG Shi-tian.Study on epigenetic reformation of rockmass[J].Hydrogeology and Engineering Geology 1994,21(4):1-61.(in Chinese)
    [2]孙广忠.岩体结构力学[M].北京:科学出版社,1988:1-6.
    [3]沈军辉,王兰生,李天斌,等.溪洛渡水电站坝区岩体的浅表生改造[J].重庆大学学报:自然科学版,2003,26(1):83-87.SHEN Jun-hui,WANG Lan-sheng,LI Tian-bin,et al.Epigenetic reformation of rock mass in dam area of Xiluoduhydropower station[J].Journal of Chongqing University:Natural Science Edition,2003,26(1):83-87.(inChinese)
    [4]黄润秋,张倬元,王士天.高边坡稳定性的系统工程地质研究[M].成都:成都科技大学出版社,1991:10-15.
    [5]王士天,黄润秋,李渝生,等.雅砻江锦屏水电站重大工程地质问题研究[M].成都:成都科技大学出版社,1998:12-16.
    [6]张有天,周维垣.岩石高边坡的变形与稳定[M].北京:中国水利水电出版社,1999:27-31.
    [7]刘宏,许模,魏云杰.西南某水电站枢纽区夹泥型张裂隙成因机制探讨[J].中国地质灾害防治学报,2005,16(1):110-113.LIU Hong,XU Mo,WEI Yun-jie.Discussion on theformation mechanism of silted tensile cracks in ahydropower station dam area in Southwest China[J].TheChinese Journal of Geological Hazard and Control,2005,16(1):110-113.(in Chinese)
    [8]陶连金,张倬元,姜徳义.复杂工程岩体稳定性评价[M].成都:成都科技大学出版社,1998:18-19.
    [9]张振南,葛修润.地震载荷作用下的节理岩体破裂模型[J].岩石力学与工程学报,2005,24(10):1645-1648.ZHANG Zhen-nan,GE Xiu-run.Fracture model of jointedrock mass subjected to seismic loading[J].ChineseJournal of Rock Mechanics and Engineering,2005,24(10):1645-1648.(in Chinese)
    [10]边金,陶连金,王文沛,等.地震作用下地铁车站结构的动力变形响应研究[J].防灾减灾工程学报,2010,30(4):393-397.BIAN Jin,TAO Lian-jin,WANG Wen-pei,et al.Research on dynamic deformation responses of subwaystation structure during an earthquake[J].Journal ofDisaster Prevention and Mitigation Engineering,2010,30(4):393-397.(in Chinese)