基于阶梯式渐进破坏的开挖顺层斜坡失稳范围计算方法

doi:10.3724/1000-6915.jrme.2024.0435

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Abstract The traditional stability calculation method for bedding rock slopes mainly simplifies the slope into a plane sliding-tensile fracture failure model，conducting overall stress analysis. However，it neglects the progressive failure process along the polygonal sliding surface during the failure of bedding rock slopes. Study the failure mode，scope，and stability state of bedding rock slopes. Based on the limit equilibrium theory，the nonlinear Barton-Bandis failure criterion for rock joint surfaces was introduced. Considering the hydraulic action of bedrock fractures at the rear edge of the slope，the instability range of polygonal sliding surface bedding rock slope under the instability mode is calculated. Based on the redistribution model of shear stress in the excavation loose area，and according to the determination of shear stress on the sliding surface and the peak strength and residual strength of rock mass，identify different failure modes of excavated rock slopes. It includes progressive failure mode and multi-stage multi-block failure mode with stepped sliding surfaces. Provide corresponding failure ranges and calculation methods for stability coefficient Fs to determine the stability state of the slope. The results demonstrate that the theoretical calculation method proposed in this study aligns well with the failure extents and stability coefficient Fs obtained from engineering examples and three-dimensional discrete element numerical simulations. The theoretical calculation method is capable of reasonably analyzing the progressive failure mode of bedding rock slopes along folded sliding surfaces. Therefore，it provides valuable reference for related research.

Key words： slope engineering bedding rock slope progressive destruction polygonal sliding surface water pressure

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	Articles by authors
	DU Zhaomeng
	LIU Tianxiang
	CHENG Qiang

Cite this article:

DU Zhaomeng,LIU Tianxiang,CHENG Qiang. Calculation method for the instability range of excavated bedding-rock slopes based on stepwise progressive failure[J]. , 2025, 44(S1): 171-182.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2024.0435 OR https://rockmech.whrsm.ac.cn/EN/Y2025/V44/IS1/171

[1]	李云鹏，杨治林，王芝银. 顺层边坡岩体结构稳定性位移理论[J]. 岩石力学与工程学报，2000，19(6)：747-750.(LI Yunpeng，YANG Zhilin，WANG Zhiyin. Displacement theory of structure stability for rock mass bedding slope[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(6)：747-750.(in Chinese))
[2]	徐光明，邹广电，王年香. 倾斜基岩上的边坡破坏模式和稳定性分析[J]. 岩土力学，2004，25(5)：703-708.(XU Guangming，ZOU Guangdian，WANG Nianxiang. Failure mode and stability analysis of soil slope on inclined bedrock[J]. Rock and Soil Mechanics，2004，25(5)：703-708.(in Chinese))
[3]	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.(in Chinese))
[4]	邹宗兴. 顺层岩质滑坡演化动力学研究[博士学位论文][D]. 武汉：中国地质大学，2014.(ZOU Zongxing. Research on the evolution dynamics of the consequent bedding rockslides[Ph. D. Thesis][D]. Wuhan：China University of Geosciences，2014.(in Chinese))
[5]	王根龙，伍法权，张茂省. 平面滑动型岩质边坡稳定性极限分析上限法[J]. 工程地质学报，2011，19(2)：176-180.(WANG Genlong，WU Faquan，ZHANG Maosheng. Method of upper bound limit analysis for plane sliding of rock slopes[J]. Journal of Engineering Geology，2011，19(2)：176-180.(in Chinese))
[6]	邓华锋，齐豫，李建林，等. 水-岩作用下断续节理砂岩力学特性劣化机理[J]. 岩土工程学报，2021，43(4)：634-643.(DENG Huafeng，QI Yu，LI Jianlin，et al. Degradation mechanism of intermittent jointed sandstone under water-rock interaction[J]. Chinese Journal of Geotechnical Engineering，2021，43(4)：634-643.(in Chinese))
[7]	李得建，贾文韬，程肖，等. 阶梯状滑动断续节理顺层边坡稳定性分析[J]. 岩土工程学报，2022，44(11)：2 125-2 134.(LI Dejian，JIA Wentao，CHENG Xiao，et al. Stability of stepped sliding of bedding rock slopes with discontinuous joints[J]. Chinese Journal of Geotechnical Engineering，2022，44(11)：2 125-2 134.(in Chinese))
[8]	陈祖煜，汪小刚，杨健，等. 岩质边坡稳定分析[M]. 北京：中国水利水电出版社，2005：38-48.(CHEN Zuyu，WANG Xiaogang，YANG Jian，et al. Rock slope stability analysis[M]. Beijing：China Water Power Press，2005：38-48.(in Chinese))
[9]	BARTON N R. A relationship between joint roughness and joint shear strength[C]// Proceedings of the Symptom of International Society of Rock Mechanics. Nancy：[s. n.]，1971：1-8.
[10]	罗强，赵炼恒，李亮，等. 基于Barton-Bandis准则的锚固边坡稳定性分析[J]. 岩土力学，2013，34(5)：1 351-1 359.(LUO Qiang，ZHAO Lianheng，LI Liang，et al. Stability analysis of anchored rock slope based on Barton-Bandis failure criterion[J]. Rock and Soil Mechanics，2013，34(5)：1 351-1 359.(in Chinese))
[11]	BARTON N R. Review of a new shear strength criterion for rock joints[J]. Engineering Geology，1973，7：287-332.
[12]	BARTON N R. The shear strength of rocks and rock joints[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1976，13(9)：255-279.
[13]	BARTON N R，CHOUBEY V. The shear strength of rock joints in theory and practice[J]. Rock Mechanics，1977，10(1)：1-54.
[14]	BANDIS S，LUMSDEN A C，BARTON N R. Experimental studies of scale effects on the shear behaviour of rock joints[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1981，18(1)：1-21.
[15]	BARTON N R，BANDIS S. Review of predictive capabilities of JRC-JCS model in engineering practice[C]// Proceedings of the Rock Joints. Rotterdam：A. A. Balkma，1990：603-610.
[16]	孙书伟，李圆，杨晓锐，等. 不同岩层倾角顺倾层状岩质边坡破坏机制研究[J]. 岩石力学与工程学报，2024，43(7)：1 607-1 620. (SUN Shuwei，LI Yuan，YANG Xiaorui，et al. Study on the failure mechanism of rock slopes with dipped layered structures under various rock dip conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2024，43(7)：1 607-1 620.(in Chinese))
[17]	覃伟. 充水隙宽对顺层岩质边坡稳定性的影响[J]. 人民长江，2021，52(7)：185-191.(QIN Wei. Influence of water-filled crack width on bedding rock slope stability[J]. Yangtze River，2021，52(7)：185-191.(in Chinese))
[18]	苏培东，唐雨生，马云长，等. 基于应变软化的软弱夹层边坡渐进破坏[J]. 长江科学院院报，2022，39(6)：69-75.(SU Peidong，TANG Yusheng，MA Yunchang，et al. Progressive failure of slope with weak interlayer strain softening[J]. Journal of Yangtze River Scientific Research Institute，2022，39(6)：69-75.(in Chinese))