不同水位下滑坡渐进破坏稳定性分析
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摘要
针对三峡库区滑坡特征,考虑不同水位条件下滑坡的渐进变形破坏及稳定性演化规律.在新的剪应力-应变全过程本构模型的基础上,探讨了滑坡的渐进变形破坏机理,应用部分强度折减法、综合下滑力-抗滑力法、主推力法、综合位移法和富余位移法对卡子湾滑坡在不同水位下的稳定性、力的特征进行了分析,结果表明:卡子湾滑坡破坏面积比为0.65,对应的稳定系数表明,卡子湾滑坡整体处于基本稳定状态.
In light of the landslide charateristics in the Three Gorges Reservoir area, the progressive deformation failure and stability evaluation under different water levels are researched for the different rock-soil characteristics. The mechanism of deformation failure of the landslide is investigated; the safety factors of partial strength reduction method, comprehensive sliding anti-slip force method, main traction method, comprehensive displacement method and surplus displacement method are used to analyze and calculate; and then the corresponding forces are also investigated under different water levels based on the constitutive model of the shear stress-strain complete process. The research results show that the failure area ratio is 0.05 and the whole sliding body is in a basic stable state for the Kaziwan landslide.
In light of the landslide charateristics in the Three Gorges Reservoir area, the progressive deformation failure and stability evaluation under different water levels are researched for the different rock-soil characteristics. The mechanism of deformation failure of the landslide is investigated; the safety factors of partial strength reduction method, comprehensive sliding anti-slip force method, main traction method, comprehensive displacement method and surplus displacement method are used to analyze and calculate; and then the corresponding forces are also investigated under different water levels based on the constitutive model of the shear stress-strain complete process. The research results show that the failure area ratio is 0.05 and the whole sliding body is in a basic stable state for the Kaziwan landslide.
引文
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[3] Zhu Dayong,Qian Qihu.Rigorous and Quasi-rigorous Limit Equilibrium Solutions of 3D Slope Stability and Application to Engineering[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(8):1513-1528..
[4] Li Ning,Qian Qihu.Four Criteria of Stability Analysis and Assessment of High Rock Slope[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(9):1754 -1759.
[5] Zheng Hong.A Rigorous Three-dimensional Limit Equilibrium Method[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(8):1529-1538.
[6] Zheng H,Yang Z L,Sn G H.Extreme Solutions to The Limit Equilibrium Method Subjected to Physical Admissibility[J].Natural Hazards,2013,65(1):79-96.
[7] 卢应发,邓国栋,杨丽平,等.滑坡的关键块力学行为及力传递特征和不同应力状态的稳定系数研究[J].岩石力学与工程学报,2014,33(5):884-891.
[8] 卢应发,黄学斌,刘德富.边坡沿滑面力的分布及稳定性分析[J].岩土工程学报,2017,7(39):1322-1330.
[9] 卢应发,杨丽平,华国辉.一种新的节理本构模型及几种新的滑坡稳定系数计算方法[J].岩石力学与工程学报,2013,31(12):433-454.
[10] 卢应发.一种新的本构模型及参数标定,岩土力学,2016,37(8):2138-2144.
[11] 杨丽平.一种黄土滑坡渐进破坏过程分析[J].岩土力学,2018,34(4):2591-2601.
[12] Nouaouria M S,Guenfoud M,Lafifi B.Engineering properties of loess in Algeria[J].Engineering Geology,2008,99(1):85-90.
[13] Lu Yingfa.Deformation and Failure Mechanism of Slope in Three Dimensions[J].Journal of Rock Mechanics and Geo-technical Engineering,2015,7(2):109-119.
[14] 卢应发,黄学斌,刘德富.边坡稳定分析条块力-位移法及其应用[J].岩土力学,2015,36(10):2780-2786.
[15] Hungr O,Evans SG,Bovis M,Hutchinson JN.Review of the classification of landslides of the flow type[J].Environmental and Engineering Geoscience,2001,7(3):221-238.
[16] Lu Yingfa.Mechanism and Stability Analyses of Progressive Failure of Pull-type Landslide[C].Wuhan Proceedings of the third Academic Conference of Geology Resource Management and Sustainable Development.2015:281-291.
[17] 卢应发,刘德富,石峻峰.基于牵引式滑坡变形破坏机制的稳定性分析和预测预警方法:ZL20141002 5081.2[P].2014-07-23.
[18] 卢应发,刘德富.一种边坡渐进破坏潜在滑动面的计算方法:201510658880.6[P].2016-02-17.
[19] 三峡工程库区地质灾害防治工作指挥部.三峡库区三期地质灾害防治工程设计技术要求[R].2005.