地震荷载作用下二元结构反倾开挖斜坡的变形破坏模型试验
|
摘要
选取彭州市龙门山镇王家坪滑坡所处斜坡作为二元结构反倾开挖损伤斜坡的典型实例,进行了地震荷载作用下变形破坏的室内物理模型试验。结果表明,开挖加剧了斜坡在地震荷载作用下的变形破坏。从破坏形式来看,反倾斜坡的坡变形破坏分为2个部分,一为浅表覆盖层的整体滑动,二为反倾岩层受浅表覆盖层滑动牵引而发生倾倒—崩塌,与野外调查结果吻合。从整个变形破坏过程来看,可以划分为以下阶段:地震初始阶段(浅表覆盖层与基岩接触面逐渐贯通过程)—浅表覆盖层滑动启动阶段—浅表覆盖层全面滑动及基岩牵引—倾倒阶段。试验重现和揭示了斜坡的变形破坏过程和规律。
The slope of Wangjiaping landslide,which is located in Longmenshan Town,Pengzhou City,was selected as a typical example of binary structure anti-dip slope with excavation failure,and indoor physical model tests were carried out on its deformation and failure under seismic loading.The results showed that the deformation and failure of slope under seismic loading were exacerbated by excavation.As viewed from failure mode,the deformation and failure of anti-dip slope was characterized by both integral sliding of superficial overburden and dump-collapse of anti-dip rocks,consistent with the results of field surveys.The entire process of deformation and failure could be divided into the following phases,which were the initial stage of earthquake(a gradual connecting process between superficial overburden and bedrock interface),superficial overburden sliding initiation stage,and superficial overburden full sliding and bedrock traction-dumping stage.The deformation and failure process and laws of binary structure anti-dip slope were reproduced by the model test.
The slope of Wangjiaping landslide,which is located in Longmenshan Town,Pengzhou City,was selected as a typical example of binary structure anti-dip slope with excavation failure,and indoor physical model tests were carried out on its deformation and failure under seismic loading.The results showed that the deformation and failure of slope under seismic loading were exacerbated by excavation.As viewed from failure mode,the deformation and failure of anti-dip slope was characterized by both integral sliding of superficial overburden and dump-collapse of anti-dip rocks,consistent with the results of field surveys.The entire process of deformation and failure could be divided into the following phases,which were the initial stage of earthquake(a gradual connecting process between superficial overburden and bedrock interface),superficial overburden sliding initiation stage,and superficial overburden full sliding and bedrock traction-dumping stage.The deformation and failure process and laws of binary structure anti-dip slope were reproduced by the model test.
引文
[1]A Fayou,Kong Jiming,Ni Zhenqiang,et al.Analysis of seismic loading response for different excavation damaged slope[J].Journal of Sichuan University:Engneering Science Edition,2010,42(Supp 1):56-62.[阿发友,孔纪名,倪振强,等.不同形态开挖损伤斜坡的地震荷载响应分析[J].四川大学学报:工程科学版,2010,42(增刊1):5662.]
[2]Cui P,Zhu Y,Han Y,et al.The 12 May 2008 Wenchuan Earthquake lakes:distribution and preliminary risk evaluation[J].Landslides,2009,6(3):209-223.
[3]Huang Runqiu,Li Weile.Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China[J].Science in China Series E:Technological Sciences,2009,52(4):810-819.
[4]Huang R Q,Li W L.Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake,China[J].Bulletin of Engineering Geology and the Environment,2009,68(3):363-371.
[5]Xu Qiang,Fan Xuanmei,Huang Runqiu,et al.Landslide dams triggered by the Wenchuan Earthquake,SichuanProvince,south west China[J].Bulletin of Engineering Geology and the Environment,2009,68(3):373-386.
[6]Han Yongshun,Cui Peng,Zhu Yingyan,et al.Remote sensing monitoring and assessment of traffical damage by earthquake—A case study in Du-Wen Highway[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):273-283.[韩用顺,崔鹏,朱颖彦,等.汶川地震危害道路交通及其遥感监测评估——以都汶公路为例[J].四川大学学报:工程科学版,2009,41(3):273283.]
[7]Cui Peng,Han Yongshun,Chen Xiaoqing.Distribution and risk analysis of dammed lakes reduced by Wenchuan Earthquake[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):35-42.[崔鹏,韩用顺,陈晓清.汶川地震堰塞湖分布规律与风险评估[J].四川大学学报:工程科学版,2009,41(3):35-42.]
[8]Kong Jiming,A Fayou,Wu Wenping.Wenchuan seismic landslide types and typical cases analysis[J].Journal of Soil and Water Conservation,2009,23(6):66-70.[孔纪名,阿发友,吴文平.汶川地震滑坡类型及典型实例分析[J].水土保持学报,2009,23(6):66-70.]
[9]Kong Jiming,Cui Yun,Tian Shujun,et al.Typical case study on the development characteristics of fragmentation-sliding seismic landslide[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):119-124.[孔纪名,崔云,田述军,等.地震碎裂滑动型滑坡发育特点及典型实例分析[J].四川大学学报:工程科学版,2009,41(3):119-124.]
[10]Bommer J J,Rodryguez C E.Earthquake-induced landslides in Central America[J].Engineering Geology,2002,63:189-220.
[11]He Yunlong,Lu Shuyuan.A method for calculating the seismic action in rock slope[J].Chinese Journal of Geotechnical Engineering,1998,20(2):66-68.[何蕴龙,陆述远.岩石边坡地震作用近似计算方法[J].岩土工程学报,1998,20(2):66-68.]
[12]Peng Ding,Chen Lingling.Stability analysis on high slopes of TGP lock under seismic action[J].Journal of Yangtze River Scientific Research Institute,2001,18(6):47-49.[彭定,陈玲玲.三峡船闸高边坡在地震作用下的稳定性分析[J].长江科学院院报,2001,18(6):47-49.]
[13]Tao Lianjin,Su Shengrui,Zhang Zhuoyuan.Dynamic stability analysis of jointed rock slope[J].Journal of Engineering Geology,2001,9(1):32-38.[陶连金,苏生瑞,张倬元.节理岩体边坡的动力稳定性分析[J].工程地质学报,2001,9(1):32-38.]
[14]Xu Weiya,Xie Shouyi,Qi Zhicheng,et al.Three dimension numerical simulation study for high and deep rock slope in shuibuya hydraulic power project[J].Journal of China Three Gorges University:Natural Sciences,1998,20(3):11-15.[徐卫亚,谢守益,齐志诚,等.水布垭马崖高陡边坡三维数值模拟研究[J].武汉水利电力大学(宜昌)学报,1998,20(3):11-15.]
[15]Xiao Keqiang,Li Haibo,Liu Yaqun,et al.Study on deformation characteristics of bedding slopes under earthquake[J].Rock and Soil Mechanics,2007,28(8):1557-1564.[肖克强,李海波,刘亚群,等.地震荷载作用下顺层岩体边坡变形特征分析[J].岩土力学,2007,28(8):1557-1564.]
[16]Meng Da,Meng Xiangchong,Zhao Yuan.Slope excavation and analysis on seismic dynamic responses[J].Coal Engineering,2009(1):77-79.[孟达,孟祥冲,赵援.边坡的开挖及其地震动力响应分析.煤炭工程,2009(1):7779.]
[17]罗先启,葛修润.滑坡模型试验理论及其应用[M].北京:中国水利水电出版社,2008:16-27.
[2]Cui P,Zhu Y,Han Y,et al.The 12 May 2008 Wenchuan Earthquake lakes:distribution and preliminary risk evaluation[J].Landslides,2009,6(3):209-223.
[3]Huang Runqiu,Li Weile.Development and distribution of geohazards triggered by the 5.12 Wenchuan Earthquake in China[J].Science in China Series E:Technological Sciences,2009,52(4):810-819.
[4]Huang R Q,Li W L.Analysis of the geo-hazards triggered by the 12 May 2008 Wenchuan Earthquake,China[J].Bulletin of Engineering Geology and the Environment,2009,68(3):363-371.
[5]Xu Qiang,Fan Xuanmei,Huang Runqiu,et al.Landslide dams triggered by the Wenchuan Earthquake,SichuanProvince,south west China[J].Bulletin of Engineering Geology and the Environment,2009,68(3):373-386.
[6]Han Yongshun,Cui Peng,Zhu Yingyan,et al.Remote sensing monitoring and assessment of traffical damage by earthquake—A case study in Du-Wen Highway[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):273-283.[韩用顺,崔鹏,朱颖彦,等.汶川地震危害道路交通及其遥感监测评估——以都汶公路为例[J].四川大学学报:工程科学版,2009,41(3):273283.]
[7]Cui Peng,Han Yongshun,Chen Xiaoqing.Distribution and risk analysis of dammed lakes reduced by Wenchuan Earthquake[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):35-42.[崔鹏,韩用顺,陈晓清.汶川地震堰塞湖分布规律与风险评估[J].四川大学学报:工程科学版,2009,41(3):35-42.]
[8]Kong Jiming,A Fayou,Wu Wenping.Wenchuan seismic landslide types and typical cases analysis[J].Journal of Soil and Water Conservation,2009,23(6):66-70.[孔纪名,阿发友,吴文平.汶川地震滑坡类型及典型实例分析[J].水土保持学报,2009,23(6):66-70.]
[9]Kong Jiming,Cui Yun,Tian Shujun,et al.Typical case study on the development characteristics of fragmentation-sliding seismic landslide[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):119-124.[孔纪名,崔云,田述军,等.地震碎裂滑动型滑坡发育特点及典型实例分析[J].四川大学学报:工程科学版,2009,41(3):119-124.]
[10]Bommer J J,Rodryguez C E.Earthquake-induced landslides in Central America[J].Engineering Geology,2002,63:189-220.
[11]He Yunlong,Lu Shuyuan.A method for calculating the seismic action in rock slope[J].Chinese Journal of Geotechnical Engineering,1998,20(2):66-68.[何蕴龙,陆述远.岩石边坡地震作用近似计算方法[J].岩土工程学报,1998,20(2):66-68.]
[12]Peng Ding,Chen Lingling.Stability analysis on high slopes of TGP lock under seismic action[J].Journal of Yangtze River Scientific Research Institute,2001,18(6):47-49.[彭定,陈玲玲.三峡船闸高边坡在地震作用下的稳定性分析[J].长江科学院院报,2001,18(6):47-49.]
[13]Tao Lianjin,Su Shengrui,Zhang Zhuoyuan.Dynamic stability analysis of jointed rock slope[J].Journal of Engineering Geology,2001,9(1):32-38.[陶连金,苏生瑞,张倬元.节理岩体边坡的动力稳定性分析[J].工程地质学报,2001,9(1):32-38.]
[14]Xu Weiya,Xie Shouyi,Qi Zhicheng,et al.Three dimension numerical simulation study for high and deep rock slope in shuibuya hydraulic power project[J].Journal of China Three Gorges University:Natural Sciences,1998,20(3):11-15.[徐卫亚,谢守益,齐志诚,等.水布垭马崖高陡边坡三维数值模拟研究[J].武汉水利电力大学(宜昌)学报,1998,20(3):11-15.]
[15]Xiao Keqiang,Li Haibo,Liu Yaqun,et al.Study on deformation characteristics of bedding slopes under earthquake[J].Rock and Soil Mechanics,2007,28(8):1557-1564.[肖克强,李海波,刘亚群,等.地震荷载作用下顺层岩体边坡变形特征分析[J].岩土力学,2007,28(8):1557-1564.]
[16]Meng Da,Meng Xiangchong,Zhao Yuan.Slope excavation and analysis on seismic dynamic responses[J].Coal Engineering,2009(1):77-79.[孟达,孟祥冲,赵援.边坡的开挖及其地震动力响应分析.煤炭工程,2009(1):7779.]
[17]罗先启,葛修润.滑坡模型试验理论及其应用[M].北京:中国水利水电出版社,2008:16-27.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心