考虑渐进破坏过程的滑坡推力计算方法

doi:10.13278/j.cnki.jjuese.20160333

摘要/Abstract

摘要： 在滑坡防治工程设计当中，推力确定是治理工程设计是否合理有效的前提。本文进行了3种类型滑坡的渐进变形破坏模式分析，从滑带参数弱化的角度阐述了不同类型滑坡的渐进演化过程，并以滑带力学参数经历峰前应力阶段、软化阶段、残余应力阶段刻画了滑带空间形态所经历的峰前应力状态、临界应力状态、残余应力状态3个阶段；基于不平衡推力法，提出3种类型滑坡临界状态条块的确定方法，把滑坡划分为发生剪切段和未发生剪切段，提出了不同类型滑坡渐进破坏过程中推力计算公式及计算过程中滑带参数取值方法。以任意滑坡为例，从不同类型滑坡角度分析了滑坡在渐进破坏过程中推力的变化规律，结果表明：不同类型滑坡渐进破坏到第5状态时，牵引式滑坡、推移式滑坡和复合式滑坡的推力大小分别为4 100，4 980和3 150 kN/m，推移式滑坡推力最大，说明滑坡以不同模式破坏时推力存在明显差异。此计算方法不仅反应了不同类型滑坡的渐进破坏过程，又解决了具有应变软化性质的滑坡推力计算问题，在实际工程中为滑坡的设计提供合理的推力。

关键词: 滑坡类型, 渐进破坏, 取值方法, 推力计算

Abstract: In the design of landslide prevention, the determination of thrust is a precondition for reasonable design of control engineering. The progressive deformation failure modes of three types of landslides were analyzed, and the progressive evolution process of the different types of landslides were described based on the weakening of sliding zone parameters in this study. The different part of sliding zone were portrayed spatially for going through three states of the pre-peak stress state, critical stress state and residual stress state according to the corresponding mechanical strength in the three stages of the pre-peak stress stage, the softening stage and the residual stress stage. The distinguish criterion of sliding block of critical state was proposed based on the unbalanced thrust method. The calculation model and calculation formula of thrust of progressive failure of landslides were established, and the parameter value method of sliding zone was proposed. Moreover, the thrust variation in the process of progressive failure was analyzed from the points of view of different types of landslides. The results show that when the different types of landslides were progressively damaged to the fifth states, the thrust of retrogressive landslide, load-caused landslide and complex landslide was 4 100, 4 980 and 3 150 kN/m respectively, and the thrust of load-caused landslide is the largest, indicating that there is a significant difference in landslide thrust in different modes. This method can not only reflects the progressive failure process of different types of landslides, but also solves the problem of the thrust calculation of landslide with strain softening properties, and further can provide a reasonable thrust estimation for the design of landslide prevention.

Key words: landslide types, progressive failure, value method, thrust calculation

中图分类号:

P642.22

谭福林, 胡新丽, 张玉明, 何春灿, 章涵. 考虑渐进破坏过程的滑坡推力计算方法[J]. 吉林大学学报(地球科学版), 2018, 48(1): 193-202.

Tan Fulin, Hu Xinli, Zhang Yuming, He Chuncan, Zhang Han. Calculation Method of Landslide Thrust Considering Progressive Failure Process[J]. Journal of Jilin University(Earth Science Edition), 2018, 48(1): 193-202.

参考文献

[1] 王恭先. 滑坡学与滑坡防治技术文集[M]. 北京:人民交通出版社,2010:34-42. Wang Gongxian. Proceedings of Landslide Science and Landslide Prevention Technology[M]. Beijing: China Communications Press, 2010:34-42.
[2] 郑颖人,陈祖煜,王恭先,等. 边坡与滑坡工程治理[M]. 2版. 北京:人民交通出版社,2007:14-24. Zheng Yingren, Chen Zuyu, Wang Gongxian, et al. Engineering Treatment of Slope and Landslide[M].2nd ed. Beijing: China Communications Press, 2007: 14-24.
[3] Lu Yingfa. Deformation and Failure Mechanism of Slope in Three Dimensions[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2015, 7(2):109-119.
[4] 卢应发,邓国栋,杨丽平,等.滑坡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. Lu Yingfa, Deng Guodong, Yang Liping, et al. Study of Mechanical Behaviors of Key Blocks and Characteristics of Force Transmit and Stability Coefficient of Different Stress States of Landslides[J].Chinese Journal of Geotechnical Engineering, 2014, 33(5):884-891.
[5] 宋东日,任伟中,沈波,等.牵引式滑坡的破坏机制及其加固措施探讨:以某高速公路牵引式滑坡为例[J].岩土力学,2013, 34(12):3587-3593. Song Dongri, Ren Weizhong, Shen Bo, et al. Discussion on Failure Mechanism of Retrogressive Landslide and Its Reinforcement Measures: Taking a Certain Expressway Retrogressive Landslide for Example[J]. Rock and Soil Mechanics, 2013, 34(12):3587-3593.
[6] 袁从华,童志怡,卢海峰.牵引式滑坡特征及主被动加固比较分析[J].岩土力学,2008, 29(10):2853-2858. Yuan Conghua, Tong Zhiyi, Lu Haifeng. Analysis of Characteristics of Retrogressive Landslide and Comparison Between Active and Passive Reinforcements[J]. Rock and Soil Mechanics, 2008, 29(10):2853-2858.
[7] 周跃峰,龚壁卫,胡波,等. 牵引式滑坡演化模式研究[J].岩土工程学报,2014, 36(10):1855-1862. Zhou Yuefeng, Gong Biwei, Hu Bo, et al. Evolution Mode of Retrogressive Landslide[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(10):1855-1862.
[8] 蔡文,曹洪,罗彦,等.强度折减有限元法模拟边坡牵引式破坏过程[J].岩石力学与工程学报,2011, 30(增刊2):3529-3533. Cai Wen, Cao Hong, Luo Yan, et al. Simulation of Retrogressive Landslide Failure Process by Strength Reduction FEM[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(Sup.2):3529-3533.
[9] Lin Hungchou, Yu Yuzhen, Li Guangxin, et al. A Simplified Numerical Approach for the Prediction of Rainfall-Induced Retrogressive Landslides[J]. Acta Geologica Sinica, 2016, 90(4): 1471-1480.
[10] 谭福林,胡新丽,张玉明, 等. 牵引式滑坡推力计算方法研究[J]. 岩土力学, 2015, 36(增刊2):532-538. Tan Fulin, Hu Xinli, Zhang Yuming, et al. Study on Calculation Method of Retrogressive Landslide Thrust[J]. Rock and Soil Mechanics, 2015, 36(Sup.2):532-538.
[11] 王宝亮,彭盛恩,陈洪凯. 推移式滑坡形成机制的力学演绎[J]. 地质灾害与环境保护,2010, 21(2):74-77. Wang Baoliang, Peng Sheng'en, Chen Hongkai. Mechanical Deduction of Formation Mechanism for the Thrust Load Caused Landslide[J]. Journal of Geological Hazards and Environment Preservation, 2010, 21(2): 74-77.
[12] 雍睿,胡新丽,唐辉明,等.推移式滑坡演化过程模型试验与数值模拟研究[J]. 岩土力学,2013, 34(10):3018-3027. Yong Rui, Hu Xinli, Tang Huiming, et al. Model Testing and Numerical Simulation Study of Evolutionary Process of Thrust Load Caused Landslide[J]. Rock and Soil Mechanics, 2013, 34(10):3018-3027.
[13] 易朋莹,邓时义,吕涛,等. 基于FLAC3D的浮托型推移式滑坡稳定性分析[J]. 四川理工学院学报(自然科学版),2012, 25(2):60-63. Yi Pengying, Deng Shiyi, Lü Tao, et al. Analysis of Stability for Floated-Pushed Landslide Based on FLAC3D[J]. Journal of Sichuan University of Science & Engineering (Natural Science Edition), 2012, 25(2): 60-63.
[14] Tang Huiming, Hu Xinli, Xu Cong, et al. A Novel Approach for Determining Landslide Pushing Force Based on Landslide-Pile Interactions[J]. Engineering Geology, 2014,182:15-24.
[15] Zhang Min, Nie Lei, Xu Yan, et al. A Thrust Load-Caused Landslide Triggered by Excavation of the Slope Toe: A Case Study of the Chaancun Landslide in Dalian City, China[J]. Arabian Journal of Geosciences, 2015,8(9): 6555-6565.
[16] 夏浩,雍睿,马俊伟. 推移式滑坡模型试验推力加载方法的研究[J]. 长江科学院院报,2015,32(1):112-116. Xia Hao, Yong Rui, Ma Junwei. Method of Driving Force Loading in Model Test of Landslide Caused by Thrust Load[J]. Journal of Yangtze River Scientific Research Institute, 2015, 32(1):112-116.
[17] 邬爱清,丁秀丽,李会中,等. 非连续变形分析方法模拟千将坪滑坡启动与滑坡全过程[J]. 岩石力学与工程学报,2006, 29(7):1297-1303. Wu Aiqing, Ding Xiuli, Li Huizhong, et al. Numerical Simulation of Startup and Whole Failure Process of Qianjiangping Landslide Using Discontinuous Deformation Analysis Method[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 29(7):1297-1303.
[18] 杨光华,钟志辉,张玉成,等.根据应力场和位移场判断滑坡的破坏类型及最优加固位置确定[J].岩石力学与工程学, 2012, 31(9):1879-1887. Yang Guanghua, Zhong Zhihui, Zhang Yucheng, et al. Identification of Landslide Type and Determination of Optimal Reinforcement Site Based on Stress Field and Displacement Field[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(9):1879-1887.
[19] 肖林萍,赵玉光.复合型滑坡体系统的工程地质勘察及其稳定性分析[J]. 工程地质学报,2002, 10(增刊2):320-325. Xiao Linping, Zhao Yuguang. Engineering Geological Exploration and Stability Analysis of Complex Landslip System[J]. Journal of Engineering Geology, 2002, 10(Sup.2):320-325.
[20] 石豫川,冯文凯,刘汉超,等.特大多期复合型滑坡稳定性评价及因素敏感性分析[J]. 岩土力学,2004, 25(6):975-980. Shi Yuchuan, Feng Wenkai, Liu Hanchao, et al. Stability Evaluation for Giant and Multiple Landslide and Sensitive Analysis Factors[J]. Rock and Soil Mechanics, 2004, 25(6):975-980.
[21] 谭福林,胡新丽,张玉明,等. 复合式滑坡推力计算方法研究[J]. 长江科学院院报, 2016, 33(6):99-104. Tan Fulin, Hu Xinli, Zhang Yuming, et al.A Method of Calculating the Thrust of Complex Landslide[J]. Journal of Yangtze River Scientific Research Institute, 2016, 33(6): 99-104.
[22] Quinn P E, Diederichs M S, Rowe R K, et al. Development of Progressive Failure in Sensitive Clay Slopes[J]. Canadian Geotechnical Journal, 2012,49(7): 782-795.
[23] Dey R, Hawlader B, Phillips R, et al. Large Deformation Finite-Element Modelling of Progressive Failure Leading to Spread in Sensitive Clay Slopes[J]. Geotechnique, 2015, 65(8): 657-668.
[24] 王庚荪,孔令伟,郭爱国,等. 含剪切带单元模型及其在边坡渐进破坏分析中的应用[J]. 岩石力学与工程学报,2005,24(21):3852-3857. Wang Gengsun, Kong Lingwei, Guo Aiguo, et al. Element Model with Shear Band and Its Application to Progressive Failure Analysis of Slopes[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(21): 3852-3857.
[25] 刘忠玉,陈少伟. 应变软化土质边坡渐进破坏的演化模型[J]. 郑州大学学报(工学版),2002, 23(2):37-40. Liu Zhongyu, Chen Shaowei. Evolution Model of Progressive Failure of Strain-Softening Soil Slopes[J]. Journal of Zhengzhou University(Engineering Science), 2002, 23(2): 37-40.
[26] 刘开富,谢新宇,张继发,等. 土质边坡的弹塑性应变局部化分析[J].岩土工程学报,2008,30(增刊):291-294. Liu Kaifu, Xie Xinyu, Zhang Jifa, et al. Elasticplastic Strain Localization Analysis of Soil Slope[J]. Chinese Journal of Geotechnical Engineering, 2008,30(Sup.):291-294.
[27] 唐芬,郑颖人,赵尚毅. 土坡渐进破坏的双安全系数讨论[J].岩石力学与工程学报,2007,26(7):1402-1407. Tang Fen, Zheng Yingren, Zhao Shangyi. Discussion on Two Safety Factors for Progressive Failure of Soil Slope[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(7): 1402-1407.
[28] 刘爱华,王思敬. 平面坡体渐进破坏模型及其应用[J]. 工程地质学报,1994, 2(1):1-8. Liu Aihua, Wang Sijing. Progressive Failure Model for Slope with Plane Sliding Surface and Its Application[J]. Journal of Engineering Geology, 1994, 2(1):1-8.
[29] 余飞,陈善雄,余和平. 顺层岩质边坡渐进破坏及失稳机理的数值模拟研究[J].岩土力学,2005, 26(增刊1):36-40. Yu Fei, Chen Shanxiong, Yu Heping. Numerical Simulation Study on Progressive Destruction and Failure Mechanism of Bedding Rock Slopes[J]. Rock and Soil Mechanics, 2005, 26(Sup.1):36-40.
[30] 朱雷,黄润秋,王小群,等.基于滑带强度参数动态演化的滑坡稳定性研究[J]. 岩土力学,2015, 36(增刊2):431-437. Zhu Lei, Huang Runqiu, Wang Xiaoqun, et al. Stability Study of Landslide Based on Dynamic Evolution of Sliding Surface Strength Parameter[J]. Rock and Soil Mechanics, 2015, 36(Sup.2):431-437.
[31] 卢应发,杨丽平,刘德富. 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, 32(12):2431-2438. Lu Yingfa, Yang Liping, Liu Defu. A New Joint Constitutive Model and a few New Methods of Stability Coefficient Calculation of Landslides[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(12): 2431-2438.
[32] 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):2787-2798. Lu Yingfa, Huang Xuebin, Liu Defu. Slice Block Force-Displacement Method of Slope Stability Analysis and Its Application[J]. Rock and Soil Mechanics, 2015, 36(10):2787-2798.
[33] 凌道盛,涂福彬,卜令方. 基于黏聚区域模型的边坡渐进破坏过程强化有限元分析[J]. 岩土工程学报,2012,34(8):1387-1393. Ling Daosheng, Tu Fubin, Bu Lingfang. Enhanced Finite Element Analysis of Progressive Failure of Slopes Based on Cohesive Zone Model[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(8):1387-1393.
[34] 何忠明,吴维,付宏渊,等. 基于应变软化模型的软岩高边坡过程稳定性研究[J].中南大学学报(自然科学版),2013, 44(3):1203-1208. He Zhongming, Wu Wei, Fu Hongyuan, et al. Process Stability of Soft Rock High Slope Based on Strain Softening Model[J]. Journal of Central South University (Science and Technology), 2013, 44(3):1203-1208.
[35] 薛海斌,党发宁,尹小涛,等. 应变软化边坡稳定性分析方法研究[J]. 岩土工程学报,2016,38(3):570-576. Xue Haibin, Dang Faning, Yin Xiaotao, et al. Stability Analysis Methods for Strain-Softening Slopes[J]. Chinese Journal of Geotechnical Engineering, 2016,38(3):570-576.
[36] 邹宗兴,唐辉明,熊承仁,等. 大型顺层岩质滑坡渐进破坏地质力学模型与稳定性分析[J]. 岩石力学与工程学报,2012,31(11):2222-2231. Zou Zongxing, Tang Huiming, Xiong Chengren, et al. Geomechanical Model of Progressive Failure for Large Consequent Bedding Rockslide and Its Stability Analysis[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(11):2222-2231.
[37] 张倬元,王士天,王兰生. 工程地质分析原理[M]. 北京:地质出版社,1994:327-330. Zhang Zhuoyuan, Wang Shitian, Wang Lansheng. Analyzing Principle of Engineering Geology[M]. Beijing: Geological Publishing House, 1994:327-330.
[38] 张芳枝, 陈晓平. 东深供水工程风化泥质软岩残余强度特性研究[J]. 工程地质学报, 2003, 11(1): 54-57. Zhang Fangzhi, Chen Xiaoping. The Characteristic of Residual Strength of Soft Clayey Rocks of the East River-Shenzhen Water Supply Project[J]. Journal of Engineering Geology, 2003, 11(1): 54-57.
[39] 田斌, 戴会超, 王世梅. 滑带土结构强度特征及其强度参数取值研究[J]. 岩石力学与工程学报, 2004, 23(17):2887-2892. Tian Bin, Dai Huichao, Wang Shimei. Strength Characteristics of Soil in Slide Zone and Determination of Its Parameters[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(17): 2887-2892.
[40] 谭文辉,任奋华,苗胜军. 峰值强度与残余强度对边坡加固的影响研究[J].岩土力学,2007,28(10):616-618. Tan Wenhui, Ren Fenhua, Miao Shengjun. Influence of Parameters of Peak Strength and Residual Strength on the Reinforcement of Slopes[J]. Rock and Soil Mechanics, 2007,28(10):616-618.
[41] 洪勇,岳玉秋,郑孝玉, 等. 大连滨海粉质黏土剪切力学特性环剪试验[J].吉林大学学报(地球科学版),2016,46(5): 1475-1481. Hong Yong,Yue Yuqiu, Zheng Xiaoyu,et al. Shear Strength of Silty Clay in Dalian by Ring Shear Tests[J]. Journal of Jilin University (Earth Science Edition), 2016,46(5):1475-1481.

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