层状反倾边坡弯曲倾倒破坏计算方法探讨

doi:10.13722/j.cnki.jrme.2014.0838

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Abstract Flexural toppling failure is one of the most common types of failure in layered counter-tilt slope. The limit equilibrium method is still the most common approach in the toppling failure study at present. Firstly，Based on the cantilever beam limit equilibrium model proposed by Aydan，the toppling failure limit equilibrium equation considering the influence of block top shape，damaged step height and slope toe triangle block is established. Secondly，depending on the block stability state and failure mode，blocks above the basal plane are divided into three zones that stable zone，toppling zone and sliding zone. In addition，the boundary condition is deduced. Thirdly，based on limit equilibrium equation，the calculation method of failure basal plane for flexural toppling failure in layered counter-tilt slope is proposed and a special computer code is developed. Finally，two case studies are used for practical verification of the proposed approach as well as the parametric study is conducted. The analytical results show that the angle between the failure basal plane and the plane normal to the discontinuities nearly increases linearly with the slope cut angle while decreases with the strata thickness. The results also indicate that slope failure mode gradually transforms from toppling failure to toppling-slipping failure with the increase of slope cut angle. In addition，the steeper the slope natural angle and the larger the scope of the destruction zone.

Key words： slope engineering toppling failure counter-tilt slope failure basal plane parametric analysis

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	Articles by authors
	ZHENG Yun1
	CHEN Congxin1
	LIU Xiumin1
	LIU Tingting2
	ZHOU Yichao1
	XIA Kaizong1
	FU Hua1

Cite this article:

ZHENG Yun1,CHEN Congxin1,LIU Xiumin1, et al. INVESTIGATION ON CALCULATION METHOD OF LAYERED COUNTER-TILT SLOPE FOR FLEXURAL TOPPLING FAILURE[J]. , 2015, 34(S2): 4252-4261.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.0838 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/4252

[1]	LIU C H，JAKSA M B，MEYERS A G. Improved analytical solution for topplingstability analysis of rock slopes[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(8)：1361-1372.
[2]	AYDAN O，KAWAMOTO T. The stability of slopes and undergroundopenings against flexural toppling and their stabilization[J]. Rock Mechanics and Rock Engineering，1992，25(3)：143-165.
[3]	ADHIKARY D P，DYSKIN A V，JEWELLR J. A study of the mechanism of flexuraltoppling failure of rock slopes[J]. Rock Mechanics and Rock Engineering，1997，30(2)：75-93.
[4]	ADHIKARYD P，DYSKIN A V. Modelling of progressive and instantaneous failures of foliated rock slopes[J]. Rock Mechanics and Rock Engineering，2007，40(4)：349-362.
[5]	卢海峰，刘泉声，陈从新. 反倾岩质边坡悬臂梁极限平衡模型的改进[J]. 岩土力学，2012，33(2)：577-584.(LU Haifeng，LIU Quansheng，CHEN Congxin. Improvement of cantilever beam limit equilibrium model of counter-tilt rock slopes[J]. Rock and Soil Mechanics，2012，33(2)：577-584.(in Chinese))
[6]	蒋良潍，黄润秋. 反倾层状岩体斜坡弯曲-拉裂两种失稳破坏之判据探讨[J]. 工程地质学报，2006，14(3)：289-294.(JIANG Liangwei，HUANG Runqiu. Bending yielding and tensile cracking criteria for failure of rock slope whose dip direction opposite to the dip direction of strata[J]. Journal of Engineering Geology，2006，14(3)：289-294.(in Chinese))
[7]	STEWARTD P，ADHIKARY D P，JEWELL R J. Studies on the stability of model rock slopes[C]//Proceedings of the International Conference Centrifuge 94. Singapore：A. A. Balkema，1994：629-634.
[8]	罗华阳，王敬，谢新宇，等. 五强溪水电站左岸边坡位移监测与变形特征[J]. 大坝观测与土工测试，2000，24(3)：22-24.(LUO Huayang，WANG Jing，XIE Xinyu，et al. Displacement monitoring and deformation characteristics of ship lock slope at left bank of Wuqiangxi hydropower station[J]. Dam Observation and Geotechnical Tests，2000，24(3)：22-24.(in Chinese))
[9]	左保成，陈从新，刘小巍，等. 反倾岩质边坡破坏机制模型试验研究[J]. 岩石力学与工程学报，2005，24(19)：3505-3511.(ZUO Baocheng，CHEN Congxin，LIU Xiaowei，et al. Modeling experiment study on failure mechanism of counter-tilt rock slope[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(19)：3505-3511.(in Chinese))
[10]	左宝成. 反倾岩质边坡破坏机制研究[博士学位论文][D]．北京：中国科学院，2004.(ZUO Baocheng. study on losing stability mechanics of counter-tilt rock slopes[Ph. D. Thesis][D]. Beijing：Chinese Academy of Sciences，2004.(in Chinese))
[11]	BROWN I，HITINGER M，GOODMAN R E. Finite element study of theNevis Bluff(New Zealand) rock slope failure[J]. Rock Mechanics Felsmechanik Mecanique des Roches，1980，12(3)：231-245.
[12]	蔡跃，三谷泰浩，江琦哲郎. 反倾层状岩体边坡稳定性的数值分析[J]. 岩石力学与工程学报，2008，27(12)：2517-2522.(CAI Yue，MITANI Yasuhiro，ESAKI Tetsuro. Numerical analysis of stability for an antidip stratified rock slope[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(12)：2517-2522.(in Chinese))
[13]	HSU S C，NELSON P P. Analysis of slopes in jointed weak rock massesusing distinct element method[C]//Proceedings of Mechanics of Jointed and Faulted Rock. Vienna，Austria：[s.n.]，1995：589-594.
[14]	程东幸，刘大安，丁恩保，等. 层状反倾岩质边坡影响因素及反倾条件分析[J]. 岩土工程学报，2005，27(11)：1362-1366.(CHENG Dongxing，LIU Daan，DING Enbao，et al. Analysis of influential factors and toppling conditions of toppling rock slope[J]. Chinese Journal of GeotechnicalEngineering，2005，27(11)：1362-1366.(in Chinese))
[15]	刘海军. 皖南山区反倾板岩边坡倾倒变形机制研究[硕士学位论文][D]. 成都：成都理工大学，2012.(LIU Haijun. Research on the toppling deformation mechanism of counter-tilt slate slope in the mountainous area of Southern Anhui[M.S. Thesis][D]. Chengdu：Chinese Academy of Sciences，2012.(in Chinese))
[16]	GOODMAN R E，BRAY J W. Toppling of rock slopes[C]//Proceedings of ASCE Specialty Conference，Rock Engineering for Foundations and Slopes. Colorado：Boulder，1976：201-234.
[17]	郑允，陈从新，朱玺玺，等. 考虑地震作用的岩质边坡倾倒破坏分析[J]. 岩土力学，2014，35(4)：1025-1032.(ZHENG Yun，CHEN Congxin，ZHU Xixi，et al. Analysis of toppling failure of rock slopes subjected to seismic loads[J]. Rock and Soil Mechanics，2014，35(4)：1025-1032.(in Chinese))
[18]	郑允，陈从新，刘秀敏，等. 坡顶荷载作用下岩质边坡倾倒破坏分析[J]. 岩土力学，2015(待刊).(ZHENG Yun，CHEN Congxin，LIU Xiumin，et al. Analysis of toppling failure of rock slopes due to slope top load[J]. Rock and Soil Mechanics，2015(in Press).(in Chinese))
[19]	MEHDI A，ABBAS M，AMIN V M. Stability analysis of rock slopes against block-flexure toppling failure[J]. Rock Mechanics and Rock Engineering，2012，45(4)：519-532.
[20]	AYDAN O，AMINI M. An experimental study on rock slopes against ?exural topplingfailure under dynamic loading and some theoretical considerations for its stability assessment[J]. Journal of the College of Marine Science and Technology，Tokai University，2009，7(2)：25-40.