海底斜坡稳定性研究进展及分析
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摘要
海底斜坡稳定性受风暴潮、海底地震等有许多不确定因素影响,易发生失稳破坏,产生较大的海洋地质灾害问题。简要介绍了国内外海底斜坡稳定性研究进展;利用GEO—SLOPE滑坡分析软件进行海底边坡稳定性计算,建立研究区斜坡有限元模型、滑移模式,确定模型计算的基础资料如海底地形参数、地层结构参数、土体强度参数等指标,模拟大风浪和地震力作用等极端条件下斜坡稳定性可靠度计算和数值分析,确定海底斜坡失稳空间特征和斜坡失稳概率,对促进今后的海底斜坡稳定性分析方法研究将会起到一定的指导作用。
Under the impact of storm surge,earthquake and other uncertain factors,large scale sediment failure may be triggered along the submarine slope.In this paper,we try to brief the progress of submarine slope stability research both abroad and at home,with emphasis on methodology.Discussed were the GEO-SLOPE landslide analysis software,the total stress and limit equilibrium method and probability method for submarine slope stability calculation.The sliding model and slope finite element model were introduced for determining the model base material in a selected area,such as underwater terrain parameters,the stratigraphic parameters,soil strength parameters.Simulation was suggested for down slope stability reliability calculation under extreme conditions,such as storm and earthquake.Numerical analysis was introduced for study of slope instability probability.
Under the impact of storm surge,earthquake and other uncertain factors,large scale sediment failure may be triggered along the submarine slope.In this paper,we try to brief the progress of submarine slope stability research both abroad and at home,with emphasis on methodology.Discussed were the GEO-SLOPE landslide analysis software,the total stress and limit equilibrium method and probability method for submarine slope stability calculation.The sliding model and slope finite element model were introduced for determining the model base material in a selected area,such as underwater terrain parameters,the stratigraphic parameters,soil strength parameters.Simulation was suggested for down slope stability reliability calculation under extreme conditions,such as storm and earthquake.Numerical analysis was introduced for study of slope instability probability.
引文
[1]胡光海,刘振夏,房俊伟.国内外海底斜坡稳定性研究概况[J].海洋科学进展,2006,24(1):130-136.
[2]胡光海,刘忠臣,孙永福,等.海底斜坡土体失稳的研究进展[J].海岸工程,2004,23(1):64-65.
[3]Locat J,Bronhold B,Hart B,et al.COSTA-Canada,a Ca-nadian contribution to the study of continental slope stabili-ty:An overview[C]∥Proceedings of the54rd Canadian Geotechnical Conference.Calgary,Canada:[s.n.],2001:730-737.
[4]顾小芸.海底边坡稳定分析方法综述[J].力学进展,1989(1):50-59.
[5]孙永福,董立峰,蒲高军,等.风暴潮作用下黄河水下三角洲斜坡稳定性研究[J].工程地质学报,2006,14(5):582-587.
[6]刘世建,陈建康,符文熹,等.基于ANSYS和GEO-SLOPE的斜坡稳定分析法[J].人民长江,2008,39(14):46-48.
[7]Canals M,G Lastras,R Urgeles,et al.Slope failure dy-namics and impacts from sea floor and shallow sub-seafloor geophysical data:case studies from the COSTA project[J].Marine Geology,2004,213(1-4):9-72.
[8]Solheim K,Berg K.The Storegga Slide complex:repetitive large scale sliding with similar cause and development[J].Marine Geology,2005,22(9/10):97-107.
[9]胡光海,仲德林.海底土体失稳过程分类及其声学特征[J].中国地质灾害与防治学报,2004,15(3):91-95.
[10]Locat J,Lee H J.Submarine landslides:advances and challenges[J].Canadian Geotechnical Journal,2002,39:193-212.
[11]Lee H J,Schwab W J,Edwards B D.Quantitative con-trols on submarine slope failure morphology[J].Marine Geotechnology,1991,10:143-157.
[12]Haflidason H,Sejrup H P,Nygard A,et al.The Storeg-ga slide architecture,geometry and slide development[J].Marine Geology,2004,213(1-4):201-234.
[13]胡光海.东海陆坡海底滑坡识别及致滑因素影响研究[D].青岛:中国海洋大学,2010.
[14]李安龙,杨荣民,曹立华,等.黄河水下三角洲海底斜坡波致稳定性分析[J].青岛:中国海洋大学学报,2004,34(2):277-278.
[2]胡光海,刘忠臣,孙永福,等.海底斜坡土体失稳的研究进展[J].海岸工程,2004,23(1):64-65.
[3]Locat J,Bronhold B,Hart B,et al.COSTA-Canada,a Ca-nadian contribution to the study of continental slope stabili-ty:An overview[C]∥Proceedings of the54rd Canadian Geotechnical Conference.Calgary,Canada:[s.n.],2001:730-737.
[4]顾小芸.海底边坡稳定分析方法综述[J].力学进展,1989(1):50-59.
[5]孙永福,董立峰,蒲高军,等.风暴潮作用下黄河水下三角洲斜坡稳定性研究[J].工程地质学报,2006,14(5):582-587.
[6]刘世建,陈建康,符文熹,等.基于ANSYS和GEO-SLOPE的斜坡稳定分析法[J].人民长江,2008,39(14):46-48.
[7]Canals M,G Lastras,R Urgeles,et al.Slope failure dy-namics and impacts from sea floor and shallow sub-seafloor geophysical data:case studies from the COSTA project[J].Marine Geology,2004,213(1-4):9-72.
[8]Solheim K,Berg K.The Storegga Slide complex:repetitive large scale sliding with similar cause and development[J].Marine Geology,2005,22(9/10):97-107.
[9]胡光海,仲德林.海底土体失稳过程分类及其声学特征[J].中国地质灾害与防治学报,2004,15(3):91-95.
[10]Locat J,Lee H J.Submarine landslides:advances and challenges[J].Canadian Geotechnical Journal,2002,39:193-212.
[11]Lee H J,Schwab W J,Edwards B D.Quantitative con-trols on submarine slope failure morphology[J].Marine Geotechnology,1991,10:143-157.
[12]Haflidason H,Sejrup H P,Nygard A,et al.The Storeg-ga slide architecture,geometry and slide development[J].Marine Geology,2004,213(1-4):201-234.
[13]胡光海.东海陆坡海底滑坡识别及致滑因素影响研究[D].青岛:中国海洋大学,2010.
[14]李安龙,杨荣民,曹立华,等.黄河水下三角洲海底斜坡波致稳定性分析[J].青岛:中国海洋大学学报,2004,34(2):277-278.
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