| Citation: | CHANG Zhilu，YU Qi，ZHONG Min，et al. Probabilistic stability analysis of rock slopes with coupled determining and random discontinuities[J]. Bulletin of Geological Science and Technology，2025，44（2）：1-12 doi: 10.19509/j.cnki.dzkq.tb20240388
|
Stability analysis of rock slopes is crucial for ensuring the normal construction and safe operation of engineering facilities. Instability of slopes can cause severe casualties and economic losses. The widespread presence of determining and random discontinuities within rock slopes leads to rock mass discontinuity and heterogeneity, significantly affecting slope stability, deformation characteristics, and failure modes. Therefore, studying the development characteristics of discontinuities and their influence on slope stability is vital for slope protection and disaster prevention. However, existing studies rarely consider both determining discontinuities and random discontinuity networks when constructing rock slope models for probabilistic stability analysis and failure mechanisms.
In this study, a three-dimensional numerical slope model was constructed using Rhino software. The discrete fracture network (DFN) model was applied to generate both determining and random discontinuity networks based on field discontinuity data. A coupling analysis model for random discontinuities was then developed by integrating the slope model and discontinuity networks via 3DEC software. A probabilistic stability analysis method was proposed to analyze the effects of random discontinuities on slope stability. Finally, the proposed method was demonstrated using a simplified rock slope model to assess the impact of random discontinuity networks on slope stability, along with a probabilistic stability analysis of the left bank shoulder slope of the Jinping I Hydropower Station under natural and excavated slope conditions.
The results indicate that (1) The proposed method effectively and accurately simulates both the deterministic and random discontinuity networks, as well as coupling the discontinuity network with the rock slope model. (2) The probabilistic distribution of the slope stability coefficient can be obtained, and the results are more comprehensive and aligned with engineering practice. (3) The random discontinuity network has a greater impact on slope stability under excavated slope conditions and alters the failure path and instability mechanism of the rock slope.
The research results provide references for excavation and support schemes for rock slopes in engineering practice and offer a theoretical basis for geological disaster prevention and control.
| [1] |
张野,陈金桥,李炎隆. 基于多深度模型的钻孔结构面智能识别与量化分析[J]. 地质科技通报,2023,42(6):31-41.
ZHANG Y,CHEN J Q,LI Y L. Intelligent recognition and quantitative analysis of borehole hydraulic geological images utilizing multiple deep learning models[J]. Bulletin of Geological Science and Technology,2023,42(6):31-41. (in Chinese with English abstract
|
| [2] |
SHANG J,WEST L J,HENCHER S R,et al. Geological discontinuity persistence:Implications and quantification[J]. Engineering Geology,2018,241:41-54. doi: 10.1016/j.enggeo.2018.05.010
|
| [3] |
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):1607-1620.
SUN S W,LI Y,YANG X R,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):1607-1620. (in Chinese with English abstract
|
| [4] |
谷德振. 岩体工程地质力学基础[M]. 北京:科学出版社,1979.
GU D Z. Foundation of rock mass engineering geomechanics[M]. Beijing:Science Press,1979. (in Chinese)
|
| [5] |
徐光黎,唐辉明,杜时贵. 岩体结构模型与应用[M]. 武汉:中国地质大学出版社,1993.
XU G L,TANG H M,DU S G. Modelling of rock mass structures and its applications[M]. Wuhan:China University of Geosciences Press,1993. (in Chinese)
|
| [6] |
宋洋,马旭琪,赵常青,等. 隐伏非贯通软弱夹层岩质边坡剪切蠕变特征及稳定性研究[J]. 岩土工程学报,2024,46(4):755-763. doi: 10.11779/CJGE20221556
SONG Y,MA X Q,ZHAO C Q,et al. Shear creep characteristics and stability of rock slopes with concealed noninterpenetrated weak interlayer[J]. Chinese Journal of Geotechnical Engineering,2024,46(4):755-763. (in Chinese with English abstract doi: 10.11779/CJGE20221556
|
| [7] |
SUN C,JIN C Z,WANG L G,et al. Creep damage characteristics and slip law of weak-layer mudstone in an open mining slope[J]. Bulletin of Engineering Geology and the Environment,2023,82(10):399. doi: 10.1007/s10064-023-03414-x
|
| [8] |
李韬,徐奴文,戴峰,等. 白鹤滩水电站左岸坝肩开挖边坡稳定性分析[J]. 岩土力学,2018,39(2):665-674.
LI T,XU N W,DAI F,et al. Stability analysis of left bank abutment slope at Baihetan Hydropower Station subjected to excavation[J]. Rock and Soil Mechanics,2018,39(2):665-674. (in Chinese with English abstract
|
| [9] |
樊鸿志,王光进,蓝蓉,等. 露天矿山岩质边坡软弱夹层赋存状态影响边坡稳定性规律研究[J]. 重庆大学学报,2024,47(4):22-33. doi: 10.11835/j.issn.1000.582X.2024.04.003
FAN H Z,WANG G J,LAN R,et al. Influence of the occurrence state of soft interlayer on the rock slope of open-pit mine[J]. Journal of Chongqing University,2024,47(4):22-33. (in Chinese with English abstract doi: 10.11835/j.issn.1000.582X.2024.04.003
|
| [10] |
BAN L R,WANG Z F,DU W S,et al. Investigation on the physical mechanism of cavity percentage dependent shear strength for rock joints considering the real contact joint surface[J]. Rock Mechanics Bulletin,2023,2(4):100064. doi: 10.1016/j.rockmb.2023.100064
|
| [11] |
杨超,徐光黎,申艳军,等. 基于结构面网络模拟的节理岩质边坡可靠性分析[J]. 工程地质学报,2014,22(6):1221-1226.
YANG C,XU G L,SHEN Y J,et al. Joint network simulation based reliability analysis for jointed rock slopes[J]. Journal of Engineering Geology,2014,22(6):1221-1226. (in Chinese with English abstract
|
| [12] |
葛云峰,唐辉明,王亮清,等. 大数量非贯通节理岩体离散元数值模拟实现方法研究[J]. 岩石力学与工程学报,2017,36(增刊2):3760-3773.
GE Y F,TANG H M,WANG L Q,et al. Realization method of discrete element numerical simulation of large number of non-persistent jointed rock mass[J]. Chinese Journal of Rock Mechanics and Engineering,2017,36(S2):3760-3773. (in Chinese with English abstract
|
| [13] |
程锦波,夏露,于青春. 基于三维裂隙网络模拟和单孔压水试验的裂隙张开度确定方法[J]. 地质科技通报,2024,43(4):262-272.
CHENG J B,XIA L,YU Q C. Determination method of fracture aperture based on three-dimensional fracture network simulation and water injection tests[J]. Bulletin of Geological Science and Technology,2024,43(4):262-272. (in Chinese with English abstract
|
| [14] |
陈剑平. 三维网络结构岩体力学架构与展望[J]. 工程地质学报,2022,30(1):21-36.
CHEN J P. Framework and expectation of three dimensional network structural rock mechanics[J]. Journal of Engineering Geology,2022,30(1):21-36. (in Chinese with English abstract
|
| [15] |
张乔威. 深切河谷高陡岩质边坡岩体结构面参数估计及稳定性分析[D]. 合肥:合肥工业大学,2021.
ZHANG Q W. Parameter estimation of rock mass structure surface and stability analysis on high and steep rock slopes in deep valleys[D]. Hefei:Hefei University of Technology,2021. (in Chinese with English abstract
|
| [16] |
陈剑平. 岩体随机不连续面三维网络数值模拟技术[J]. 岩土工程学报,2001,23(4):397-402. doi: 10.3321/j.issn:1000-4548.2001.04.003
CHEN J P. 3-D net work numerical modeling technique for random discontinuities of rock mass[J]. Chinese Journal of Geotechnical Engineering,2001,23(4):397-402. (in Chinese with English abstract doi: 10.3321/j.issn:1000-4548.2001.04.003
|
| [17] |
LI M,DENG H,TU G X. A study of rock mass properties based on discrete fracture network modeling and compression damage process[J]. Bulletin of Engineering Geology and the Environment,2024,83(10):402. doi: 10.1007/s10064-024-03898-1
|
| [18] |
贾超,王志鹏,朱维申. 节理网络模拟的程序实现及其在地下洞室中的动态响应分析[J]. 岩土力学,2011,32(9):2867-2872. doi: 10.3969/j.issn.1000-7598.2011.09.051
JIA C,WANG Z P,ZHU W S. Program for joint network simulation and its application to dynamic response analysis of underground caverns[J]. Rock and Soil Mechanics,2011,32(9):2867-2872. (in Chinese with English abstract doi: 10.3969/j.issn.1000-7598.2011.09.051
|
| [19] |
郭亮,李晓昭,周扬一,等. 随机与确定耦合的裂隙岩体结构面三维网络模拟[J]. 岩土力学,2016,37(9):2636-2644.
GUO L,LI X Z,ZHOU Y Y,et al. Three-dimensional network simulation of fractured rock mass discontinuities based on stochastic-deterministic coupling[J]. Rock and Soil Mechanics,2016,37(9):2636-2644. (in Chinese with English abstract
|
| [20] |
FADAKAR ALGHALANDIS Y. ADFNE:Open source software for discrete fracture network engineering,two and three dimensional applications[J]. Computers & Geosciences,2017,102:1-11.
|
| [21] |
孙书伟,王玉凯,庞博. 一种岩质边坡结构面三维随机网络模拟方法[J]. 矿业科学学报,2018,3(5):461-469.
SUN S W,WANG Y K,PANG B. A method of 3D network modeling of discontinuities in rock slope[J]. Journal of Mining Science and Technology,2018,3(5):461-469. (in Chinese with English abstract
|
| [22] |
ZHENG J,GUO J C,WANG J C,et al. A universal elliptical disc (UED) model to represent natural rock fractures[J]. International Journal of Mining Science and Technology,2022,32(2):261-270. doi: 10.1016/j.ijmst.2021.12.001
|
| [23] |
ZHANG W,LAN Z G,MA Z F,et al. Determination of statistical discontinuity persistence for a rock mass characterized by non-persistent fractures[J]. International Journal of Rock Mechanics and Mining Sciences,2020,126:104177. doi: 10.1016/j.ijrmms.2019.104177
|
| [24] |
CHEN D H,CHEN H E,ZHANG W,et al. An analytical solution of equivalent elastic modulus considering confining stress and its variables sensitivity analysis for fractured rock masses[J]. Journal of Rock Mechanics and Geotechnical Engineering,2022,14(3):825-836. doi: 10.1016/j.jrmge.2021.08.007
|
| [25] |
黄少平,晏鄂川,尹晓萌,等. 不同临空条件的层状反倾岩质边坡倾倒变形几何特征参数影响规律[J]. 地质科技通报,2021,40(1):159-165.
HUANG S P,YAN E C,YIN X M,et al. Action law of geometrical characteristic parameters in the anti-dip rock slopes under different free face condition[J]. Bulletin of Geological Science and Technology,2021,40(1):159-165. (in Chinese with English abstract
|
| [26] |
石满生,许威,张美道. 基于Rhino-Griddle-Flac3D的矿体建模与地表稳定性分析[J]. 金属矿山,2020(8):182-187.
SHI M S,XU W,ZHANG M D. Orebody modeling and surface stability analysis based on Rhino-Griddle-Flac3D[J]. Metal Mine,2020(8):182-187. (in Chinese with English abstract
|
| [27] |
SONG W H,JIAO H C,XU X T,et al. An optimized modeling for in situ stresses based on Rhino accurate modeling and large-scale transverse isotropic theory[J]. Scientific Reports,2023,13:691. doi: 10.1038/s41598-023-28039-8
|
| [28] |
CUNDALL P A. A computer model for simulating progressive large-scale movements in blocky rock systems[J]. Proocedings of the Symposio of the International Society of Rock Mechanics,Nancy 2,1971,8:552.
|
| [29] |
吴建文,张恒,孙建春,等. 不连续岩体中的隧道施工全过程离散单元法仿真研究[J]. 铁道科学与工程学报,2016,13(7):1379-1385. doi: 10.3969/j.issn.1672-7029.2016.07.023
WU J W,ZHANG H,SUN J C,et al. Simulation study of tunnel construction process in discontinuous rock by discrete element method[J]. Journal of Railway Science and Engineering,2016,13(7):1379-1385. (in Chinese with English abstract doi: 10.3969/j.issn.1672-7029.2016.07.023
|
| [30] |
蔡美峰. 岩石力学与工程[M]. 第2版. 北京:科学出版社,2013.
CAI M F. Rock mechanics and engineering[M]. Second Edition. Beijing:Science Press,2013. (in Chinese)
|
| [31] |
宁宇,徐卫亚,郑文棠. 应用离散元强度折减对复杂边坡进行稳定性分析[J]. 岩土力学,2007,28(增刊1):569-574.
NING Y,XU W Y,ZHENG W T. Application in complicated high slope with strength reduction method based on discrete element method[J]. Rock and Soil Mechanics,2007,28(S1):569-574. (in Chinese with English abstract
|
| [32] |
江巍,闫金洲,欧阳晔,等. 边坡稳定性强度折减颗粒离散元法分析的细观参数标定策略[J]. 工程科学与技术,2023,55(5):50-60.
JIANG W,YAN J Z,OUYANG Y,et al. Calibration of micro parameters of particles in granular discrete element method to assess slope stability by strength reduction method[J]. Advanced Engineering Sciences,2023,55(5):50-60. (in Chinese with English abstract
|
| [33] |
雷远见,王水林. 基于离散元的强度折减法分析岩质边坡稳定性[J]. 岩土力学,2006,27(10):1693-1698. doi: 10.3969/j.issn.1000-7598.2006.10.010
LEI Y J,WANG S L. Stability analysis of jointed rock slope by strength reduction method based on UDEC[J]. Rock and Soil Mechanics,2006,27(10):1693-1698. (in Chinese with English abstract doi: 10.3969/j.issn.1000-7598.2006.10.010
|
| [34] |
蒋水华,欧阳苏,冯泽文,等. 基于结构面参数概率分布更新的节理岩质边坡可靠性分析[J]. 岩土力学,2021,42(9):2589-2599.
JIANG S H,OUYANG S,FENG Z W,et al. Reliability analysis of jointed rock slopes using updated probability distributions of structural plane parameters[J]. Rock and Soil Mechanics,2021,42(9):2589-2599. (in Chinese with English abstract
|
| [35] |
Itasca Consulting Group,Inc. Online contents for 3 dimensional distinct element code[M]. 3DEC Version 5.2. Minneapolis,Minnesota,USA:Itasca Consulting Group,Inc.,2016.
|
| [36] |
漆祖芳,姜清辉,唐志丹,等. 锦屏一级水电站左岸坝肩边坡施工期稳定分析[J]. 岩土力学,2012,33(2):531-538. doi: 10.3969/j.issn.1000-7598.2012.02.033
QI Z F,JIANG Q H,TANG Z D,et al. Stability analysis of abutment slope at left bank of Jinping-I Hydropower Project during construction[J]. Rock and Soil Mechanics,2012,33(2):531-538. (in Chinese with English abstract doi: 10.3969/j.issn.1000-7598.2012.02.033
|
| [37] |
蒋水华,魏博文,李聪. 考虑锚索腐蚀性能退化的边坡可靠度分析[J]. 长江科学院院报,2017,34(3):90-95. doi: 10.11988/ckyyb.20151043
JIANG S H,WEI B W,LI C. Slope reliability analysis considering corrosion-induced degradation of cables' performance[J]. Journal of Yangtze River Scientific Research Institute,2017,34(3):90-95. (in Chinese with English abstract doi: 10.11988/ckyyb.20151043
|
| [38] |
国家电力公司成都勘测设计研究院. 雅砻江锦屏一级水电站可行性研究报告[R]. 成都:国家电力公司成都勘测设计研究院,2003.
POWERCHINA Chengdu Engineering Corporation Limited. Feasibility study report of Yalong River Jingpin Hydropower Station[R]. Chengdu:POWERCHINA Chengdu Engineering Corporation Limited,2003. (in Chinese)
|
| [39] |
汪小刚,贾志欣,张发明,等. 岩体结构面网络模拟原理及其工程应用[M]. 北京:中国水利水电出版社,2010.
WANG X G,JIA Z X,ZHANG F M,et al. Simulation principle of rock mass structural plane network and its engineering application[M]. Beijing:China Water & Power Press,2010. (in Chinese)
|
| [40] |
QI S W,WU F Q,ZHOU Y D,et al. Influence of deep seated discontinuities on the left slope of Jinping I Hydropower Station and its stability analysis[J]. Bulletin of Engineering Geology and the Environment,2010,69(3):333-342. doi: 10.1007/s10064-010-0268-0
|
| [41] |
HUANG R Q,LIN F,YAN M. Deformation mechanism and stability evaluation for the left abutment slope of Jinping I Hydropower Station[J]. Bulletin of Engineering Geology and the Environment,2010,69(3):365-372. doi: 10.1007/s10064-010-0283-1
|
Copyright © 2010Editorial Department of Bulletin of Geological Science and Technology
Supported by:
Beijing Renhe Information Technology Co., Ltd.
DownLoad:
