| Citation: |
LIU Xiangfeng，YU Bing，HAO Guoliang，et al. Analysis of sliding mechanism of the cut slopes with multi-weak interlayers under rainfall[J]. The Chinese Journal of Geological Hazard and Control，2024，35(6): 70-81. DOI: 10.16031/j.cnki.issn.1003-8035.202302013
|
This paper presents an analysis of the hydraulic model of the slope instability of a down-dipping soft sandwich slope, focusing on the southern slope landslide project of Fushun west open pit mine. The study investigates the effects of groundwater and rainfall infiltration on the slope deformation evolution process using numerical simulation analysis with FLAC3D software. The sliding law of the slope with soft interlayer under the action of groundwater and rainfall infiltration is summarized. The results show that rainfall infiltration and groundwater flow produce osmotic pressure on the slope, causing the development of a large number of rupture surfaces on the slope. The maximum cumulative displacement is about 1.27 m resulting in a multi-stage landslide with a mixed landslide type. During the deformation and failure of the slope, tension failure is prone to occur along the weak layer near the slope top, providing a channel for surface water infiltration and groundwater migration, and showing the characteristics of multiple sliding surface, forming a continuous shear failure surface, which further leads to the multi-stage deformation of the slope. Under the influence of groundwater and rainfall infiltration, the water content in the weak layer of slope accumulates, resulting in damage and rupture, reducing the volume strain increment, lowering the effective stress, increasing the pore pressure, and reduing the shear strength, thereby inducing landslide. To improve the stability of the slope, the study compares different prevention and control schemes, including backfilling presser foot with different slope heights. The study finds that compared with the rainfall condition, the slope protected by backfilling presser foot with different slope heights has a higher safety factor. Considering the engineering practice, the backfilling and pressure protection up to half of the slope height has a better effect on preventing and controlling the slope, and the slope is more stable.
| [1] |
李安洪, 周德培, 冯君. 顺层岩质边坡稳定性分析与支挡防护设计[M]. 北京: 人民交通出版社, 2011
LI Anhong, ZHOU Depei, FENG Jun. Stability analysis and retaining protection design of bedding rock slope[M]. Beijing: China Communications Press, 2011. （in Chinese）
|
| [2] |
蒋先念,张晨阳. 三峡库区典型顺斜向岩质滑坡变形破坏特征及失稳机制分析[J]. 中国地质灾害与防治学报,2021,32(2):36 − 42. [JIANG Xiannian,ZHANG Chenyang. Deformation characteristics and failure mechanism of large-scale obliquely dip rock landslide in the Three Gorges Reservoir Region[J]. The Chinese Journal of Geological Hazard and Control,2021,32(2):36 − 42. (in Chinese with English abstract)
JIANG Xiannian, ZHANG Chenyang. Deformation characteristics and failure mechanism of large-scale obliquely dip rock landslide in the Three Gorges Reservoir Region[J]. The Chinese Journal of Geological Hazard and Control, 2021, 32（2）: 36-42. （in Chinese with English abstract）
|
| [3] |
李守定,李晓,吴疆,等. 大型基岩顺层滑坡滑带形成演化过程与模式[J]. 岩石力学与工程学报,2007,26(12):2473 − 2480. [LI Shouding,LI Xiao,WU Jiang,et al. Evolution process and pattern of sliding zone in large consequent bedding rock landslide[J]. Chinese Journal of Rock Mechanics and Engineering,2007,26(12):2473 − 2480. (in Chinese with English abstract) DOI: 10.3321/j.issn:1000-6915.2007.12.012
LI Shouding, LI Xiao, WU Jiang, et al. Evolution process and pattern of sliding zone in large consequent bedding rock landslide[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26（12）: 2473-2480. （in Chinese with English abstract） DOI: 10.3321/j.issn:1000-6915.2007.12.012
|
| [4] |
张璟,陈文胜,蒋茂林. 等厚顺层岩质边坡稳定性的模型试验研究及数值验证[J]. 北方交通,2020,378(10):40 − 44. [ZHANG Jing,CHEN Wensheng,JIANG Maolin. Model test study and numerical verification of stability of bedding rock slope with equal thickness[J]. Northern Communications,2020,378(10):40 − 44. (in Chinese with English abstract)
ZHANG Jing, CHEN Wensheng, JIANG Maolin. Model test study and numerical verification of stability of bedding rock slope with equal thickness[J]. Northern Communications, 2020, 378（10）: 40-44. （in Chinese with English abstract）
|
| [5] |
贺小黑,彭鑫,谭建民,等. 地下水渗流对崩坡积滑坡稳定性和变形的影响—以湖南安化春风滑坡群为例[J]. 中国地质灾害与防治学报,2020,31(6):96 − 103. [HE Xiaohei,PENG Xin,TAN Jianmin,et al. Influence of groundwater seepage on stability and deformation of colluvial deposit landslide:Taking Chunfeng landslide group in Anhua County of Hunan Province as an example[J]. The Chinese Journal of Geological Hazard and Control,2020,31(6):96 − 103. (in Chinese with English abstract)
HE Xiaohei, PENG Xin, TAN Jianmin, et al. Influence of groundwater seepage on stability and deformation of colluvial deposit landslide: taking Chunfeng landslide group in Anhua County of Hunan Province as an example[J]. The Chinese Journal of Geological Hazard and Control, 2020, 31（6）: 96-103. （in Chinese with English abstract）
|
| [6] |
陈林万,张晓超,裴向军,等. 降雨诱发直线型黄土填方边坡失稳模型试验[J]. 水文地质工程地质,2021,48(6):151 − 160. [CHEN Linwan,ZHANG Xiaochao,PEI Xiangjun,et al. Model test of the linear loess fill slope instability induced by rainfall[J]. Hydrogeology & Engineering Geology,2021,48(6):151 − 160. (in Chinese with English abstract) DOI: 10.16030/j.cnki.issn.1000-3665.202010041
CHEN Linwan, ZHANG Xiaochao, PEI Xiangjun, et al. Model test of the linear loess fill slope instability induced by rainfall[J]. Hydrogeology & Engineering Geology, 2021, 48（6）: 151-160. （in Chinese with English abstract） DOI: 10.16030/j.cnki.issn.1000-3665.202010041
|
| [7] |
王智德,夏元友,夏国邦,等. 顺层岩质边坡稳定性极限分析上限法[J]. 岩土力学,2015,36(2):576 − 583. [WANG Zhide,XIA Yuanyou,XIA Guobang,et al. Upper bound limit analysis method for stability analysis of bedding rock slopes[J]. Rock and Soil Mechanics,2015,36(2):576 − 583. (in Chinese with English abstract)
WANG Zhide, XIA Yuanyou, XIA Guobang, et al. Upper bound limit analysis method for stability analysis of bedding rock slopes[J]. Rock and Soil Mechanics, 2015, 36（2）: 576-583. （in Chinese with English abstract）
|
| [8] |
冯君,周德培,李安洪. 顺层岩质边坡开挖稳定性研究[J]. 岩石力学与工程学报,2005,24(9):1474 − 1478. [FENG Jun,ZHOU Depei,LI Anhong. Research on stability of rock bedded slopes[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(9):1474 − 1478. (in Chinese with English abstract) DOI: 10.3321/j.issn:1000-6915.2005.09.003
FENG Jun, ZHOU Depei, LI Anhong. Research on stability of rock bedded slopes[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24（9）: 1474-1478. （in Chinese with English abstract） DOI: 10.3321/j.issn:1000-6915.2005.09.003
|
| [9] |
陈从新,黄平路,卢增木. 岩层倾角影响顺层岩石边坡稳定性的模型试验研究[J]. 岩土力学,2007,28(3):476 − 481. [CHEN Congxin,HUANG Pinglu,LU Zengmu. Study on correlation between stability of consequent rock slope and obliquity of rock layer by simulation experiment[J]. Rock and Soil Mechanics,2007,28(3):476 − 481. (in Chinese with English abstract) DOI: 10.3969/j.issn.1000-7598.2007.03.009
CHEN Congxin, HUANG Pinglu, LU Zengmu. Study on correlation between stability of consequent rock slope and obliquity of rock layer by simulation experiment[J]. Rock and Soil Mechanics, 2007, 28（3）: 476-481. （in Chinese with English abstract） DOI: 10.3969/j.issn.1000-7598.2007.03.009
|
| [10] |
HART M W. Bedding-parallel shear zones as landslide mechanisms in horizontal sedimentary rocks[J]. Environmental and Engineering Geoscience,2000,6(2):95 − 113. DOI: 10.2113/gseegeosci.6.2.95
|
| [11] |
舒继森,唐震,才庆祥. 水力学作用下顺层岩质边坡稳定性研究[J]. 中国矿业大学学报,2012,41(4):521 − 525. [SHU Jisen,TANG Zhen,CAI Qingxiang. Research on stability of bedding rock slopes under hydraulic pressure[J]. Journal of China University of Mining & Technology,2012,41(4):521 − 525. (in Chinese with English abstract)
SHU Jisen, TANG Zhen, CAI Qingxiang. Research on stability of bedding rock slopes under hydraulic pressure[J]. Journal of China University of Mining & Technology, 2012, 41（4）: 521-525. （in Chinese with English abstract）
|
| [12] |
魏刚,殷志强,罗银飞,等. 黄河上游康杨滑坡堆积体特征及形成机理分析[J]. 中国地质灾害与防治学报,2022,33(2):1 − 8. [WEI Gang,YIN Zhiqiang,LUO Yinfei,et al. Analysis on the accumulation deposits characteristics and formation mechanism of Kangyang landslide in the upper reaches of Yellow River[J]. The Chinese Journal of Geological Hazard and Control,2022,33(2):1 − 8. (in Chinese with English abstract) DOI: 10.16031/j.cnki.issn.1003-8035.2022.02-01
WEI Gang, YIN Zhiqiang, LUO Yinfei, et al. Analysis on the accumulation deposits characteristics and formation mechanism of Kangyang landslide in the upper reaches of Yellow River[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33（2）: 1-8. （in Chinese with English abstract） DOI: 10.16031/j.cnki.issn.1003-8035.2022.02-01
|
| [13] |
HOEK E, BRAY J. Rock slope engineering, 3rd ed[M]. London: [s.n.], 1981.
|
| [14] |
赵磊,付昱凯,陈春利,等. 青川浅层滑坡降雨入渗及稳定性研究[J]. 干旱区资源与环境,2022,36(1):111 − 119. [ZHAO Lei,FU Yukai,CHEN Chunli,et al. Study on rainfall infiltration and stability of Qingchuan shallow landslide[J]. Journal of Arid Land Resources and Environment,2022,36(1):111 − 119. (in Chinese with English abstract) DOI: 10.13448/j.cnki.jalre.2022.015
ZHAO Lei, FU Yukai, CHEN Chunli, et al. Study on rainfall infiltration and stability of Qingchuan shallow landslide[J]. Journal of Arid Land Resources and Environment, 2022, 36（1）: 111-119. （in Chinese with English abstract） DOI: 10.13448/j.cnki.jalre.2022.015
|
| [15] |
聂永鹏,倪万魁,刘魁,等. 陕西延安某老滑坡场地上建筑物破坏机理分析[J]. 中国地质灾害与防治学报,2019,30(2):43 − 50. [NIE Yongpeng,NI Wankui,LIU Kui,et al. Damage mechanism of buildings on an old landslide in Yan’an City[J]. The Chinese Journal of Geological Hazard and Control,2019,30(2):43 − 50. (in Chinese with English abstract) DOI: 10.16031/j.cnki.issn.1003-8035.2019.02.06
NIE Yongpeng, NI Wankui, LIU Kui, et al. Damage mechanism of buildings on an old landslide in Yan'an City[J]. The Chinese Journal of Geological Hazard and Control, 2019, 30（2）: 43-50. （in Chinese with English abstract） DOI: 10.16031/j.cnki.issn.1003-8035.2019.02.06
|
| [16] |
田辽西,赵玉苹,赵伟. 降雨入渗对某滑坡地下水渗流及滑坡稳定性影响[J]. 科学技术创新,2022(20):125 − 128. [TIAN Liaoxi,ZHAO Yuping,ZHAO Wei. Influence of rainfall infiltration on groundwater seepage and landslide stability of a landslide[J]. Scientific and Technological Innovation,2022(20):125 − 128. (in Chinese with English abstract) DOI: 10.3969/j.issn.1673-1328.2022.20.032
TIAN Liaoxi, ZHAO Yuping, ZHAO Wei. Influence of rainfall infiltration on groundwater seepage and landslide stability of a landslide[J]. Scientific and Technological Innovation, 2022（20）: 125-128. （in Chinese with English abstract） DOI: 10.3969/j.issn.1673-1328.2022.20.032
|
| [17] |
刘艳辉,刘丽楠. 基于诱发机理的降雨型滑坡预警研究—以花岗岩风化壳二元结构斜坡为例[J]. 工程地质学报,2016,24(4):542 − 549. [LIU Yanhui,LIU Linan. Rainfall-induced mechanism based early warning model for slopes of dualistic layers in weathered granitic area[J]. Journal of Engineering Geology,2016,24(4):542 − 549. (in Chinese with English abstract)
LIU Yanhui, LIU Linan. Rainfall-induced mechanism based early warning model for slopes of dualistic layers in weathered granitic area[J]. Journal of Engineering Geology, 2016, 24（4）: 542-549. （in Chinese with English abstract）
|
| [18] |
RICHARDS L A. Capillary conduction of liquids through porous mediums[J]. Physics,1931,1(5):318 − 333. DOI: 10.1063/1.1745010
|
| [19] |
FREDLUND D G,XING A Q. Equations for the soil-water characteristic curve[J]. Canadian Geotechnical Journal,1994,31(4):521 − 532. DOI: 10.1139/t94-061
|
| [20] |
黄润秋,徐则民,许模. 地下水的致灾效应及异常地下水流诱发地质灾害[J]. 地球与环境,2005,33(3):1 − 9. [HUANG Runqiu,XU Zemin,XU Mo. Hazardous effects of underground water and extraordinary water flow-induced geohazards[J]. Geology-geochemistry,2005,33(3):1 − 9. (in Chinese with English abstract) DOI: 10.3969/j.issn.1672-9250.2005.03.001
HUANG Runqiu, XU Zemin, XU Mo. Hazardous effects of underground water and extraordinary water flow-induced geohazards[J]. Geology-geochemistry, 2005, 33（3）: 1-9. （in Chinese with English abstract） DOI: 10.3969/j.issn.1672-9250.2005.03.001
|
| [21] |
郭子钰,刘向峰,王来贵,等. 抚顺西露天矿开挖作用下边坡变形破坏滑动规律研究[J]. 金属矿山,2021(12):190 − 199. [GUO Ziyu,LIU Xiangfeng,WANG Laigui,et al. Study on the slope deformation and failure sliding law under the excavation of Fushun west open-pit mine[J]. Metal Mine,2021(12):190 − 199. (in Chinese with English abstract)
GUO Ziyu, LIU Xiangfeng, WANG Laigui, et al. Study on the slope deformation and failure sliding law under the excavation of Fushun west open-pit mine[J]. Metal Mine, 2021（12）: 190-199. （in Chinese with English abstract）
|
| [22] |
郭子钰. 露天煤矿边坡变形破坏滑动全过程研究[D]. 阜新: 辽宁工程技术大学, 2021
GUO Ziyu. Study on the whole process of slope deformation, failure and sliding in open-pit coal mine[D]. Fuxin: Liaoning Technical University, 2021. （in Chinese with English abstract）
|
| [23] |
缪海宾. 抚顺西露天矿高陡边坡蠕变-大变形综合预警及防治技术研究[D]. 阜新: 辽宁工程技术大学, 2020
MIAO Haibin. Research on comprehensive early warning and prevention technology of creep-large deformation in high and steep slope of Fushun west open-pit mine[D]. Fuxin: Liaoning Technical University, 2020. （in Chinese with English abstract）
|
| [24] |
崔原. 抚顺西露天矿南帮滑坡地质特征与机理分析[D]. 长春: 吉林大学, 2018
CUI Yuan. Geological characteristics and mechanism analysis of south slope landslide in Fushun west open pit mine[D]. Changchun: Jilin University, 2018. （in Chinese with English abstract）
|
| [25] |
李超. 抚顺西露天矿南帮边坡稳定性分析[D]. 阜新: 辽宁工程技术大学, 2013
LI Chao. Stability analysis of south slope of Fushun west open pit mine[D]. Fuxin: Liaoning Technical University, 2013. （in Chinese with English abstract）
|
| [26] |
郭富赟,周小龙,火飞飙,等. 舟曲断裂带滑坡灾害效应与防治对策研究[J]. 中国地质灾害与防治学报,2022,33(6):80 − 89. [GUO Fuyun,ZHOU Xiaolong,HUO Feibiao,et al. Study on landslide disaster effect and prevention countermeasures in Zhouqu fault zone[J]. The Chinese Journal of Geological Hazard and Control,2022,33(6):80 − 89. (in Chinese with English abstract)
GUO Fuyun, ZHOU Xiaolong, HUO Feibiao, et al. Study on landslide disaster effect and prevention countermeasures in Zhouqu fault zone[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33（6）: 80-89. （in Chinese with English abstract）
|
Email alert
RSS
DownLoad: