某大型水电站水文站滑坡蓄水后的稳定性三维数值模拟研究
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摘要
水文站滑坡蓄水后的稳定性状况,直接关系到大坝的运营与安全,一直是各部门都十分关心的重要问题。通过三维有限元(FLAC3D)对其蓄水后滑坡体的稳定性状况进行数值模拟分析,结果表明:在蓄水初期,滑坡体的变形量小,滑坡体的整体稳定性较好。随着蓄水位的增加,其变形量也逐渐呈增大的趋势。当蓄水位达到1850m高程时,滑坡体就开始发生了局部的较大变形或破坏。当达到正常蓄水位(1880m高程)时,变形与破坏现象进一步加剧,范围也进一步有所扩大。但总的来说,水文站滑坡整体稳定性较好,属中浅层滑坡。
The stability of Shuiwenzhan slope after impoundment is very important to each correlative department because it affects the dam safety and its usage. The results by 3D numerical modeling indicate that there are three failure planes in the slope,a major failure plane and two secondary ones. The connectivity of the major one is low and the others are high. The results also indicate that its deformation is little and it is stable in general in the primary stage;With the impounded water level rising,its deformation increases. There is a large local deformation or damage while the impounded water level reaches 1 850 m. The deformation and damage become bigger and wider leading to partial failure while the impounded water level is up to 1 880 m,but in a whole,it is still stable, and it could only slide in middle-superficial layer.
The stability of Shuiwenzhan slope after impoundment is very important to each correlative department because it affects the dam safety and its usage. The results by 3D numerical modeling indicate that there are three failure planes in the slope,a major failure plane and two secondary ones. The connectivity of the major one is low and the others are high. The results also indicate that its deformation is little and it is stable in general in the primary stage;With the impounded water level rising,its deformation increases. There is a large local deformation or damage while the impounded water level reaches 1 850 m. The deformation and damage become bigger and wider leading to partial failure while the impounded water level is up to 1 880 m,but in a whole,it is still stable, and it could only slide in middle-superficial layer.
引文
[1]黄润秋,王士天,许强等.反倾向层状结构岩质边坡失稳机理及稳定性评价方法研究[R].成都:成都理工学院,1994.(Huang Runqiu,Wang Shitian,Xu Qiang,et al.Study on counter-inclined layer structural rock slope destabilizing mechanics and its stability assessment methods[R].Chengdu:Chengdu Institute of Technology,1994.(in Chinese))
[2]王士天,黄润秋,张倬元等.中国西南地壳浅表层动力学过程及其工程环境效应研究[M].成都:四川大学出版社,2001.(Wang Shitian,Huang Runqiu,Zhang Zhuoyuan,et al.The Dynamic Process of Earths Superficial Crust and Its Engineering Environmental Effects[M].Chengdu:Sichuan University Press,2001.(in Chinese))
[3]黄润秋,张倬元,王士天等.黄河拉西瓦水电站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.(Huang Runqiu,Zhang Zhuoyuan,Wang Shitian,et al.Huanghe Laxiwa Hydroelectric Station Stability System Engineering Geology Study ofHigh Slope[M].Chengdu:Chengdu University of Science and Technology Press,1991.(in Chinese))
[4]黄润秋,许强,陶连金等.地质灾害过程模拟和过程控制研究[M].北京:科学出版社,2002.(Huang Runqiu,Xu Qiang,Tao Lianjin,et al.Study on Process Simulation and Control of Geologic Hazards[M].Beijing:Science Press,2002.(in Chinese))
[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,1998.168–180.(Wang Shitian,Huang Runqiu,Li Yusheng,et al.Study on Yalongjiang Important Engineering Geology of Jinping Hydroelectric Station[M].Chengdu:Chengdu University of Science and Technology Press,1998.168–180.(in Chinese))
[6]Xu P,Sheng Q.Stability analysis on high slope of shiplock in the Three Gorges Project considering effects of excavation unloading[J]Chinese Journal Rock of Mechanics and Engineering,1998,17(Supp.l):823–828.
[7]Pan J P,Huang R Q,Xu Q.Research on three-dimension simulation of open pit mine tailing dam slope stability in Panzhihua[J]Journal of the Chengdu Institute of Technology,2002,22(3):329–333.
[8]Lin ZH M,Cheng ZH H,Wang J CH,et al.FLAC stability simulation for southern slope of Yanqianshan iron mine and damage analysis[J].Chinese Journal Rock Mechanics Engineering,2002,21(Supp.l):2393–2398.
[9]刘春玲,祁生文,童立强等.利用FLAC3D分析某边坡地震稳定性[J].岩石力学与工程学报,2004,23(16):2730–2733.(Liu Chunling,Qi Shengwen,Tong Liqiang,et al.Stability analysis of slope under earthquake with FLAC3D[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(16):2730–2733.
[10]李术才,李树忱,朱维申等.泰安抽水蓄能电站围堰稳定性的流–固耦合分析[J].岩石力学与工程学报,2004,23(8):1275–1279.(Li Shucai,Li Shuchen,Zhu Weishen,et al.Hydro-mechanical coupling analysis on stability of cofferdam of Tai′an pumped-storage station[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(8):1275–1279.(in Chinese))
[11]张倬元,王士天,王兰生.工程地质分析原理(第二版)[M].北京:地质出版社,1994.134–137,321–338.(Zhang Zhuoyuan,Wang Shitian,Wang Lansheng.Principle of Engineering Geology Analysis(Second Edition)[M].Beijing:Geological Publishing House,1994.134–137,321–338.(in Chinese))
[12]Hoek E,Bray J W.岩石边坡工程[M].卢世宗,李成村,夏继祥译.北京:冶金工业出版社,1983.(Hoek E,Bray J W.Rock Slope Engineering[M].Translated by Lu Shizong,Li Chengcun,Xia Jixiang.Beijing:China Metallurgical Industry Press,1983.(in Chinese))
[13]Itasca.FLAC3D Version2.0.User′s Manual[M].Minneapolis:ICG,1997.
[2]王士天,黄润秋,张倬元等.中国西南地壳浅表层动力学过程及其工程环境效应研究[M].成都:四川大学出版社,2001.(Wang Shitian,Huang Runqiu,Zhang Zhuoyuan,et al.The Dynamic Process of Earths Superficial Crust and Its Engineering Environmental Effects[M].Chengdu:Sichuan University Press,2001.(in Chinese))
[3]黄润秋,张倬元,王士天等.黄河拉西瓦水电站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.(Huang Runqiu,Zhang Zhuoyuan,Wang Shitian,et al.Huanghe Laxiwa Hydroelectric Station Stability System Engineering Geology Study ofHigh Slope[M].Chengdu:Chengdu University of Science and Technology Press,1991.(in Chinese))
[4]黄润秋,许强,陶连金等.地质灾害过程模拟和过程控制研究[M].北京:科学出版社,2002.(Huang Runqiu,Xu Qiang,Tao Lianjin,et al.Study on Process Simulation and Control of Geologic Hazards[M].Beijing:Science Press,2002.(in Chinese))
[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,1998.168–180.(Wang Shitian,Huang Runqiu,Li Yusheng,et al.Study on Yalongjiang Important Engineering Geology of Jinping Hydroelectric Station[M].Chengdu:Chengdu University of Science and Technology Press,1998.168–180.(in Chinese))
[6]Xu P,Sheng Q.Stability analysis on high slope of shiplock in the Three Gorges Project considering effects of excavation unloading[J]Chinese Journal Rock of Mechanics and Engineering,1998,17(Supp.l):823–828.
[7]Pan J P,Huang R Q,Xu Q.Research on three-dimension simulation of open pit mine tailing dam slope stability in Panzhihua[J]Journal of the Chengdu Institute of Technology,2002,22(3):329–333.
[8]Lin ZH M,Cheng ZH H,Wang J CH,et al.FLAC stability simulation for southern slope of Yanqianshan iron mine and damage analysis[J].Chinese Journal Rock Mechanics Engineering,2002,21(Supp.l):2393–2398.
[9]刘春玲,祁生文,童立强等.利用FLAC3D分析某边坡地震稳定性[J].岩石力学与工程学报,2004,23(16):2730–2733.(Liu Chunling,Qi Shengwen,Tong Liqiang,et al.Stability analysis of slope under earthquake with FLAC3D[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(16):2730–2733.
[10]李术才,李树忱,朱维申等.泰安抽水蓄能电站围堰稳定性的流–固耦合分析[J].岩石力学与工程学报,2004,23(8):1275–1279.(Li Shucai,Li Shuchen,Zhu Weishen,et al.Hydro-mechanical coupling analysis on stability of cofferdam of Tai′an pumped-storage station[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(8):1275–1279.(in Chinese))
[11]张倬元,王士天,王兰生.工程地质分析原理(第二版)[M].北京:地质出版社,1994.134–137,321–338.(Zhang Zhuoyuan,Wang Shitian,Wang Lansheng.Principle of Engineering Geology Analysis(Second Edition)[M].Beijing:Geological Publishing House,1994.134–137,321–338.(in Chinese))
[12]Hoek E,Bray J W.岩石边坡工程[M].卢世宗,李成村,夏继祥译.北京:冶金工业出版社,1983.(Hoek E,Bray J W.Rock Slope Engineering[M].Translated by Lu Shizong,Li Chengcun,Xia Jixiang.Beijing:China Metallurgical Industry Press,1983.(in Chinese))
[13]Itasca.FLAC3D Version2.0.User′s Manual[M].Minneapolis:ICG,1997.
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