A REVIEW OF SUBMARINE SLOPE STABILITY STUDIES AND METHODS
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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。Abstract: 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.
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Key words:
- submarine slope /
- stability /
- safety coefficient /
- probability
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