震裂边坡的降雨稳定性研究
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摘要
震裂边坡在地震灾区分布较广,是规模较大的潜在灾害,其在雨水下渗等外界影响因素的作用下稳定性可能会发生较大的变化.针对不同的裂缝位置、裂缝深度以及考虑是否灌水,运用ABAQUS大型有限元软件,开展均质土震裂边坡的降雨稳定性分析.结果揭示了上述不同情况下的震裂边坡在降雨中的变形破坏和稳定性变化的规律,为类似边坡的分析评价及工程治理提供借鉴.
Cracked slopes induced by an earthquake are potential disasters which widely distribute in the earthquake stricken area. The stability of these slopes subjected to rain infiltration will change greatly. In this paper,the variation of safety coefficient of homogeneous soil slopes with rainfall is calculated by ABAQUS for different crack positions,different crack depths and irrigations. The results reveal the law of deformation and stability of cracked slopes induced by earthquakes in rainfall conditions,providing a theoretical reference for evaluation and engineering protection of such cracked slopes.
Cracked slopes induced by an earthquake are potential disasters which widely distribute in the earthquake stricken area. The stability of these slopes subjected to rain infiltration will change greatly. In this paper,the variation of safety coefficient of homogeneous soil slopes with rainfall is calculated by ABAQUS for different crack positions,different crack depths and irrigations. The results reveal the law of deformation and stability of cracked slopes induced by earthquakes in rainfall conditions,providing a theoretical reference for evaluation and engineering protection of such cracked slopes.
引文
[1]张瑛.“5.12”汶川大地震震裂山体灾害勘查评价与治理设计方法研究[D].成都:成都理工大学,2009:10-12.
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[4]许向宁.高地震烈度区山体变形破裂机制地质分析和地质力学模拟研究[D].成都:成都理工大学,2006.
[5]徐光兴,姚令侃,高昌宁,等.边坡动力特性与动力响应的大型振动台模型试验研究[J].岩土力学与工程学报,2008,27(3):624-632.Xu Guangxing,Yao Lingkan,Gao Changning,et al.Lare-scale shaking table model test study on dynamic characteristics and dynamic responses of slope[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(3):624-632.(in Chinese)
[6]蒋兴文,李跃清.四川地区地震与降水量的统计分析[J].高原山地气象研究,2008,28(2):33-36.Jiang Xingwen,Li Yueqing.The statistical analysis of earthquake and precipitation in Sichuan province[J].Plateau and Mountain Meteorology Research,2008,28(2):33-36.(in Chinese)
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[8]纵岗,梅岭,姜朋明,等.降雨入渗作用下土质边坡稳定性分析[J].长江大学学报:自然科学版[J].2013,10(34):56-59.Zong Gan,Mei Ling,Jiang Pengming,et al.The stability analysis of soil slope under the action of rainfall infiltration[J].Journal of Yangtze University:Natural Science Edition,2013,10(34):56-59.(in Chinese)
[9]Yang D Q,Shen Z J.Oeneralized nonlinear constitutive theory of unsaturated soils[C]∥Proc 7th Int Conf on Expansive Soils.Dallas:[s.n.],1992:158-162.
[10]贾苍琴,黄茂松,王贵和.非饱和非稳定渗流作用下土坡稳定分析的强度折减有限元方法[J].岩石力学与工程学报,2007,26(6):1290-1296.Jia Cangqin,Huang Maoson,Wang Guihe.Strength reduction fem in stability analysis of soil slopes subjected to transient unsaturated seepage[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(6):1290-1296.(in Chinese)
[11]费康,张建伟.ABAQUS在岩土工程中的应用[M].北京:中国水利水电出版社,2010.
[12]黄润秋,等.汶川地震地质灾害研究[M].北京:科学出版社,2009:487-549.
[2]丁瑜,邹晓东,党超,等.震裂边坡稳定性极限分析[J].中国地质灾害和防治学报,2011,22(2):45-49.Ding Yu,Zou Xiaodong,Dang Chao.Limit analysis on stability of cracked slopes induced by earthquake[J].The Chinese Journal of Geological Hazard and Control,2011,22(2):45-49.(in Chinese)
[3]冯文凯,许强,黄润秋,等.斜坡震裂变形力学机制初探[J].岩土力学与工程学报,2008,27(s):3124-3130.Feng Wenkai,Xu Qiang,Huang Runqiu.Preliminary study on mechanical mechanism of slope earthquake-induced deformation[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(s):3124-3130.(in Chinese)
[4]许向宁.高地震烈度区山体变形破裂机制地质分析和地质力学模拟研究[D].成都:成都理工大学,2006.
[5]徐光兴,姚令侃,高昌宁,等.边坡动力特性与动力响应的大型振动台模型试验研究[J].岩土力学与工程学报,2008,27(3):624-632.Xu Guangxing,Yao Lingkan,Gao Changning,et al.Lare-scale shaking table model test study on dynamic characteristics and dynamic responses of slope[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(3):624-632.(in Chinese)
[6]蒋兴文,李跃清.四川地区地震与降水量的统计分析[J].高原山地气象研究,2008,28(2):33-36.Jiang Xingwen,Li Yueqing.The statistical analysis of earthquake and precipitation in Sichuan province[J].Plateau and Mountain Meteorology Research,2008,28(2):33-36.(in Chinese)
[7]Richard L A.Capillary conduction of liquids through porous medius[J].Physics,1931,1(5):318-333.
[8]纵岗,梅岭,姜朋明,等.降雨入渗作用下土质边坡稳定性分析[J].长江大学学报:自然科学版[J].2013,10(34):56-59.Zong Gan,Mei Ling,Jiang Pengming,et al.The stability analysis of soil slope under the action of rainfall infiltration[J].Journal of Yangtze University:Natural Science Edition,2013,10(34):56-59.(in Chinese)
[9]Yang D Q,Shen Z J.Oeneralized nonlinear constitutive theory of unsaturated soils[C]∥Proc 7th Int Conf on Expansive Soils.Dallas:[s.n.],1992:158-162.
[10]贾苍琴,黄茂松,王贵和.非饱和非稳定渗流作用下土坡稳定分析的强度折减有限元方法[J].岩石力学与工程学报,2007,26(6):1290-1296.Jia Cangqin,Huang Maoson,Wang Guihe.Strength reduction fem in stability analysis of soil slopes subjected to transient unsaturated seepage[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(6):1290-1296.(in Chinese)
[11]费康,张建伟.ABAQUS在岩土工程中的应用[M].北京:中国水利水电出版社,2010.
[12]黄润秋,等.汶川地震地质灾害研究[M].北京:科学出版社,2009:487-549.
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