地震作用下含弱面斜坡变形破坏实验研究
|
摘要
为了研究含弱面斜坡在强震作用下变形破坏规律,对含单一弱面的3组斜坡模型模拟地震作用下的变形破坏,并用数字散斑相关方法对实验结果进行处理,得到斜坡模型位移和应变。从实验结果可以发现:位移和应变变形均集中在弱面上,随着震动的持续,这种变形积累最终导致斜坡发生破坏;模型对比中可以发现,在斜坡体内弱面越深则斜坡稳定性越强,在斜坡体内弱面越长则斜坡稳定性越弱。分析模型最初在顶部出现裂缝和沿弱面发生滑动的原因。
This paper examines the law of the deformation and failure of slopes associated with weak planes under earthquake effects.Experiments with a single three group weak surface slope model is carried out under simulated earthquake deformation and failure in shaking table.The digital speckle correlation method is used to process the experimental results.The displacement and strain of model slope are obtained.From the experimental results,it can be found that the displacement and strain are concentrated in the weak surface slope with the continuous vibration,eventually leading to the slope damage.It can be found from the experimental model comparisons that the deeper the weak surface in the slope body,the more stable the slope.The longer of the weak surface in the body,the less stable the slope.The test model first appeared fractures in the top,and then damaged along a weak surface,which is analyzed for the cause of the slope failure.
This paper examines the law of the deformation and failure of slopes associated with weak planes under earthquake effects.Experiments with a single three group weak surface slope model is carried out under simulated earthquake deformation and failure in shaking table.The digital speckle correlation method is used to process the experimental results.The displacement and strain of model slope are obtained.From the experimental results,it can be found that the displacement and strain are concentrated in the weak surface slope with the continuous vibration,eventually leading to the slope damage.It can be found from the experimental model comparisons that the deeper the weak surface in the slope body,the more stable the slope.The longer of the weak surface in the body,the less stable the slope.The test model first appeared fractures in the top,and then damaged along a weak surface,which is analyzed for the cause of the slope failure.
引文
[1]许强,裴向军,黄润秋.汶川地震大型滑坡研究[M].科学出版社,2009.Xu Qiang,Pei Xiangjun,Huang Runqiu.Research on theLandslides Caused by Wenchuan Earthquake.Beijing:SciencePress,2009.
[2]黄润秋.汶川地震地质灾害研究[M].北京:科学出版社,2009.Huang Runqiu.Geohazard Assessment of the Wenchuan Earth-quake.Beijing:Science Press,2009.
[3]蒋良潍,姚令侃,吴伟,等.传递函数分析在边坡振动台模型试验的应用探讨[J].岩土力学,2010,31(5):1365～1374.Jiang Liangwei,Yao Lingkan,Wu Wei,Xu Guangxing.Transferfunction analysis of earthquake simulation shaking table specimentest of side slopes.Rock and Soil Mechanics,2010,31(5):1365～1374.
[4]杨化超,邓喀中,郭广礼.相似材料模型变形测量中的数字近景摄影测量监测技术[J].煤炭学报,2006,31(3):292～295.Yang Huachao,Deng Kazhong,Guo Guangli.Monitoring techniquefor deformation measurement of similarmaterial specimen withdigital closerange photogrammetry.Journalof China Coal Society,2006,31(3):292～295.
[5]马少鹏,金观昌,潘一山.岩石材料基于天然散斑场的变形观测方法研究[J].岩石力学与工程学报,2002,21(6):792～796.Ma Shaopeng,Jin Guanchang,Pan Yishan.Deformationmeasurement method for rock materials based on natural specklepattern.Chinese Journal of Rock Mechanics and Engineering,2002,21(6):792～796.
[6]马少鹏.数字散斑相关方法在岩石破坏测量中的发展与应用[D].北京:清华大学,2003.Ma shaopeng.Development and Application of Digital Speckle Cor-relation Method of Failure Measurement for Rock Materials.Beijing:Tsinghua University,2003.
[7]孔祥义,董礼.岩土测试技术[M].长春:吉林教育出版社,2003.Kong Xiangyi,Dong Li.Geotechnical Testing Technology.Chang-chun:Jilin Publishing Group,2003.
[8]李晓红,卢义玉,康勇,饶晓华.岩石力学实验模拟技术[M].北京:科学出版社,2007.Li Xiaohong,Lu Yiyu,Kang Yong.Rock Mechanics ExperimentSimulation.Beijing:Science Press,2007.
[9]佟景伟,李鸿琦,等.光力学原理及测试技术[M].北京:科学出版社,2009.Tong Jingwei,Li Hongqi,et al.Principle and Test of Optical Me-chanical Technology.Beijing:Science Press,2009.
[10]马少鹏,赵永红,金观昌,潘一山,王来贵.光测方法在岩石力学实验观测中的应用述评[J].岩石力学与工程学报,2005,24(10):1794～1799.Ma Shaopeng,Zhao Yonghong,Jin Guanchang,Pan Yishan,WangLaigui.Review on application of optical measurement methods toexperimental inspection of rock mechanics.Chinese Journal ofRock Mechanics and Engineering,2005,24(10):1794～1799.
[11]潘一山,杨小彬,马少鹏,徐秉业.岩土材料变形局部化的实验研究[J].煤炭学报,2002,27(3):281～284.Pan Yishan,Yang Xiaobin,Ma Shaopeng,Xu Bingye.Experimental study on the deformation localization of rock-soilmaterial.Journal of China Coal Society,2002,27(3):281～284.
[12]郑捷,姚孝新,陈颙.岩石变形局部化的实验研究[J].地球物理学报,1982,26(6):554～562.Zheng Jie,Yao Xiaoxin,Chen Yong.A experimental study on lo-calization of deformation of rock.Acta Geophysica Sinica,1982,26(6):554～562.
[13]肖克强,李海波,刘亚群,夏祥,张磊奇.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.Xiao Keqiang,Li Haibo,Liu Yaqun,Xia Xiang,Zhang Leiqi.Study on deformation characteristics of bedding slopes underearthquake.Rock and Soil Mechanics,2007,28(8):1557～1564.
[2]黄润秋.汶川地震地质灾害研究[M].北京:科学出版社,2009.Huang Runqiu.Geohazard Assessment of the Wenchuan Earth-quake.Beijing:Science Press,2009.
[3]蒋良潍,姚令侃,吴伟,等.传递函数分析在边坡振动台模型试验的应用探讨[J].岩土力学,2010,31(5):1365～1374.Jiang Liangwei,Yao Lingkan,Wu Wei,Xu Guangxing.Transferfunction analysis of earthquake simulation shaking table specimentest of side slopes.Rock and Soil Mechanics,2010,31(5):1365～1374.
[4]杨化超,邓喀中,郭广礼.相似材料模型变形测量中的数字近景摄影测量监测技术[J].煤炭学报,2006,31(3):292～295.Yang Huachao,Deng Kazhong,Guo Guangli.Monitoring techniquefor deformation measurement of similarmaterial specimen withdigital closerange photogrammetry.Journalof China Coal Society,2006,31(3):292～295.
[5]马少鹏,金观昌,潘一山.岩石材料基于天然散斑场的变形观测方法研究[J].岩石力学与工程学报,2002,21(6):792～796.Ma Shaopeng,Jin Guanchang,Pan Yishan.Deformationmeasurement method for rock materials based on natural specklepattern.Chinese Journal of Rock Mechanics and Engineering,2002,21(6):792～796.
[6]马少鹏.数字散斑相关方法在岩石破坏测量中的发展与应用[D].北京:清华大学,2003.Ma shaopeng.Development and Application of Digital Speckle Cor-relation Method of Failure Measurement for Rock Materials.Beijing:Tsinghua University,2003.
[7]孔祥义,董礼.岩土测试技术[M].长春:吉林教育出版社,2003.Kong Xiangyi,Dong Li.Geotechnical Testing Technology.Chang-chun:Jilin Publishing Group,2003.
[8]李晓红,卢义玉,康勇,饶晓华.岩石力学实验模拟技术[M].北京:科学出版社,2007.Li Xiaohong,Lu Yiyu,Kang Yong.Rock Mechanics ExperimentSimulation.Beijing:Science Press,2007.
[9]佟景伟,李鸿琦,等.光力学原理及测试技术[M].北京:科学出版社,2009.Tong Jingwei,Li Hongqi,et al.Principle and Test of Optical Me-chanical Technology.Beijing:Science Press,2009.
[10]马少鹏,赵永红,金观昌,潘一山,王来贵.光测方法在岩石力学实验观测中的应用述评[J].岩石力学与工程学报,2005,24(10):1794～1799.Ma Shaopeng,Zhao Yonghong,Jin Guanchang,Pan Yishan,WangLaigui.Review on application of optical measurement methods toexperimental inspection of rock mechanics.Chinese Journal ofRock Mechanics and Engineering,2005,24(10):1794～1799.
[11]潘一山,杨小彬,马少鹏,徐秉业.岩土材料变形局部化的实验研究[J].煤炭学报,2002,27(3):281～284.Pan Yishan,Yang Xiaobin,Ma Shaopeng,Xu Bingye.Experimental study on the deformation localization of rock-soilmaterial.Journal of China Coal Society,2002,27(3):281～284.
[12]郑捷,姚孝新,陈颙.岩石变形局部化的实验研究[J].地球物理学报,1982,26(6):554～562.Zheng Jie,Yao Xiaoxin,Chen Yong.A experimental study on lo-calization of deformation of rock.Acta Geophysica Sinica,1982,26(6):554～562.
[13]肖克强,李海波,刘亚群,夏祥,张磊奇.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.Xiao Keqiang,Li Haibo,Liu Yaqun,Xia Xiang,Zhang Leiqi.Study on deformation characteristics of bedding slopes underearthquake.Rock and Soil Mechanics,2007,28(8):1557～1564.
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