| Citation: | CHEN Yunfei,
ZHANG Peng,
HUANG Bolin,
et al.,
2022. Failure process and long-term stability analysis of typical unstable rock mass in the Three Gorges Reservoir area considering rock mass deterioration. Journal of Geomechanics, 28 (6): 938-947. DOI: 10.12090/j.issn.1006-6616.20222821
|
Since the Three Gorges Reservoir went into service, the rock mass in the hydro-fluctuation belt of the bank slope has obviously deteriorated, which accelerates the instability of the bank slope. The potential debris avalanche threatens the safety of the Yangtze River waterway. The Banbiyan unstable rock mass in the Three Gorges Reservoir area was studied using the shear strength reduction method to analyze the failure process and long-term stability of the unstable rock mass under rock deterioration. The results show that the Banbiyan unstable rock mass is stable under natural working conditions. Under reservoir water and rock mass deterioration, the tensile stress is concentrated at the central section. The tensile cracks gradually penetrate up and down, extending to the prominent controlling cracks at the top and the bottom base fracture zone. Slip-shear failure may occur. Under the condition of reservoir water combined with rock mass deterioration and heavy rainfall, the strength of the rock mass decreases by 30% after about 40 hydrological cycles, and the stability coefficient of the Banbiyan unstable rock mass decreased to about 1.14, which is an under-stable state. It is suggested to carry out engineering prevention and control to improve the stability of dangerous rock mass to ensure the safety of the waterway. The research results can provide a scientific and reasonable basis for disaster prevention and mitigation of the Banbiyan and similar unstable rock masses in the Three Gorges Reservoir area.
|
DENG C J, WANG K W, YUAN Q S, et al., 2015. Stability of reservoir slope under repetitive variation of reservoir water level[J]. Journal of Yangtze River Scientific Research Institute, 32(4): 96-100. (in Chinese with English abstract) doi: 10.3969/j.issn.1001-5485.2015.04.019
|
|
DENG H F, FANG J C, LI J L, et al., 2021. Damage evolution of dynamic characteristics of sandstone under the sequential action of water-rock interaction and cyclic loading and unloading[J]. Rock and Soil Mechanics, 42(2): 343-351. (in Chinese with English abstract)
|
|
DOCHEZ S, LAOUAFA F, FRANCK C, et al., 2014. Multi-scale analysis of water alteration on the rock slope stability framework[J]. Acta Geophysical, 62(5): 1025-1048. doi: 10.2478/s11600-014-0232-7
|
|
FU Y, 2010. Study on water-rock interaction with the cyclic drying-wetting effect on rock[D]. Chongqing: Chongqing University. (in Chinese with English abstract)
|
|
HU L Y, ZHANG P, HUANG B L, 2022. Long-term deformation and failure mechanism of dangerous rock mass in water-level-fluctuation zone of Three Gorges Reservoir area: a case study of Guanmuling[J/OL]. Journal of Engineering Geology, 1-11. [2022-6-19] https://kns.cnki.net/kcms/detail/detail.aspx?dbcode=CAPJ&dbname=CAPJLAST&filename=GCDZ20221009000&uniplatform=NZKPT&v=9u6_tlouPxa4lAU2YcVmGRdoK6VK6205M_F5Ctg4vW0dyQCGTaZWAUVleKzwiGou. (in Chinese with English abstract)
|
|
HU M J, ZHANG Z H, YIN Y P, 2021. Study on strength weakening of carbonate rocks with water level fluctuating in Wuxia of three gorges reservoir area[J/OL]. Journal of Engineering Geology, 1-14. [2022-6-19] https://kns.cnki.net/KCMS/detail/detail.aspx?dbcode=CAPJ&dbname=CAPJLAST&filename=GCDZ20210717009. (in Chinese with English abstract)
|
|
HU Q Z, ZHOU H, XIAO B L, et al., 2010. Analysis of stability of rock bedded slope under hydraulic pressure[J]. Rock and Soil Mechanics, 31(11): 3594-3598. (in Chinese with English abstract) doi: 10.3969/j.issn.1000-7598.2010.11.039
|
|
HUANG B L, YIN Y P, ZHANG Z H, et al., 2019. Study on deterioration characteristics of shallow rock mass in water the level fluctuation zone of karst bank slopes in Three Gorges Reservoir area[J]. Chinese Journal of Rock Mechanics and Engineering, 38(9): 1786-1796. (in Chinese with English abstract)
|
|
HUANG B L, YIN Y P, LI B, et al., 2020. Rock mass deterioration and its catastrophic effect of karst bank slope in the Three Gorges Project Reservoir area[J]. Hydrogeology and Engineering Geology, 47(4): 51-61. (in Chinese with English abstract)
|
|
LIU C H, XU J, CAO C L, et al., 2005. Analysis of bedding-slip failure mechanism of rock slope due to hydraulic drive[J]. Chinese Journal of Rock Mechanics and Engineering, 24(19): 3529-3533. (in Chinese with English abstract) doi: 10.3321/j.issn:1000-6915.2005.19.021
|
|
LIU K Q, LIU H Y, QI X B, 2020. Numerical study on long-term stability of soil-rock mixture slope using strength reduction technique[J]. Journal of Engineering Geology, 28(2): 327-334. (in Chinese with English abstract)
|
|
LIU X R, FU Y, WANG Y X, et al., 2009. Stability of reservoir bank slope under water-rock interaction[J]. Rock and Soil Mechanics, 30(3): 613-616, 627. (in Chinese with English abstract) doi: 10.3969/j.issn.1000-7598.2009.03.006
|
|
LUO Y F, 2015. The evaluation of long-term stability at right dam abutmet slope of Miaowei hydro power station in Lancang river[D]. Chengdu: Chengdu University of Technology. (in Chinese with English abstract)
|
|
MENG W C, 2021. Effect of dry-wet cycle on expansive force and shear strength of expansive soil[J]. Railway Investigation and Surveying, 47(6): 55-60. (in Chinese with English abstract)
|
|
REN Y, JIANG X Y, WU C H, et al., 2022. Experimental study on fissure properties and soil-water response of red clay slope under dry-wet cycle[J]. Water Resources and Hydropower Engineering, 53(4): 172-179. (in Chinese with English abstract)
|
|
TANG L S, ZHANG P C, WANG S J, 2002a. Testing study on macroscopic mechanics effect of chemical action of water on rocks[J]. Chinese Journal of Rock Mechanics and Engineering, 21(4): 526-531. (in Chinese with English abstract)
|
|
TANG L S, ZHANG P C, WANG S J, 2002b. Testing study on effects of chemical action of aqueous solution on crack propagation in rock[J]. Chinese Journal of Rock Mechanics and Engineering, 21(6): 822-827. (in Chinese with English abstract)
|
|
Three Gorges Reservoir Area Geological Disaster Prevention and Control Work Headquarters, 2014. Technical requirements for the geological exploration in the Three Gorges Reservoir area for geological disaster prevention and control[M]. Wuhan: China University of Geosciences Press: 0-119. (in Chinese)
|
|
WANG R B, XU W Y, MENG Y D, et al., 2014. Numerical analysis of long-term stability of left bank abutment high slope at Jinping I hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering, 33(S1): 3105-3113. (in Chinese with English abstract)
|
|
YAN G Q, HUANG B L, WANG X, et al., 2021. Sliding-bending failure mechanism and evaluation of bedding limestone bank slope based on rock mass deterioration in Three Gorges Reservoir area[J]. Journal of Engineering Geology, 29(3): 668-679. (in Chinese with English abstract)
|
|
YAN J K, HUANG J B, LI H L, et al., 2020. Study on instability mechanism of shallow landslide caused by typhoon and heavy rain[J]. Journal of Geomechanics, 26(4): 481-491. (in Chinese with English abstract)
|
|
YANG H, TANG M G, XU Q, et al., 2020. Deterioration characteristic test and quality evaluation of bank slope rock mass in hydro-fluctuation belt of Three Gorges Reservoir Area[J]. Journal of Hydraulic Engineering, 51(11): 1360-1371. (in Chinese with English abstract)
|
|
YIN Y P, HUANG B L, WANG W P, et al., 2016. Reservoir-induced landslides and risk control in Three Gorges Project on Yangtze River, China[J]. Journal of Rock Mechanics and Geotechnical Engineering, 8(5): 577-595. doi: 10.1016/j.jrmge.2016.08.001
|
|
ZHANG W G, GAO X CH, GU D M, et al., 2021. Influence of cyclic wetting-drying on the shear strength of limestone with a soft interlayer[J]. Rock Mechanics and Rock Engineering, 54(8): 4369-4378. doi: 10.1007/s00603-021-02502-2
|
|
ZHANG J Y, WAN L P, PAN H Y, et al., 2017. Long-term stability of bank slope considering characteristics of water-rock interaction[J]. Chinese Journal of Geotechnical Engineering, 39(10): 1851-1858. (in Chinese with English abstract) doi: 10.11779/CJGE201710013
|
|
ZHANG Z H, DU C L, YU S, et al., 2018. Stability analysis and design of control works on Jianchuandong dangerous rock mass in Wuxia Gorge, the Three Gorges Reservoir[J]. The Chinese Journal of Geological Hazard and Control, 29(2): 48-54. (in Chinese with English abstract)
|
|
ZHOU J F, 2021. Study on prediction model for rock immersion time scale and deterioration under effect of acidic solution[J] Water Resources and Hydropower Engineering, 52(8): 162-171. (in Chinese with English abstract)
|
|
邓成进, 王孔伟, 袁秋霜, 等, 2015. 库水长期升降作用下库岸边坡稳定性研究[J]. 长江科学院院报, 32(4): 96-100. https://www.cnki.com.cn/Article/CJFDTOTAL-CJKB201504022.htm
|
|
邓华锋, 方景成, 李建林, 等, 2021. 水-岩和循环加卸载次序作用下砂岩动力特性损伤演化规律[J]. 岩土力学, 42(2): 343-351. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202102006.htm
|
|
傅晏, 2010. 干湿循环水岩相互作用下岩石劣化机理研究[D]. 重庆: 重庆大学.
|
|
胡刘洋, 张鹏, 黄波林, 2022. 三峡库区消落带岩体劣化下危岩体长期变形破坏机理: 以冠木岭为例[J/OL]. 工程地质学报, 1-11. [2022-06-14]. https://kns.cnki.net/kcms/detail/detail.aspx?dbcode=CAPJ&dbname=CAPJLAST&filename=GCDZ20221009000&uniplatform=NZKPT&v=9u6_tlouPxa4lAU2YcVmGRdoK6VK6205M_F5Ctg4vW0dyQCGTaZWAUVleKzwiGou.
|
|
胡明军, 张枝华, 殷跃平, 等, 2021. 三峡库区巫峡段消落带碳酸盐岩强度弱化研究[J/OL]. 工程地质学报, [2022-06-14]. 1-14. https://kns.cnki.net/KCMS/detail/detail.aspx?dbcode=CAPJ&dbname=CAPJLAST&filename=GCDZ20210717009.
|
|
胡其志, 周辉, 肖本林, 等, 2010. 水力作用下顺层岩质边坡稳定性分析[J]. 岩土力学, 31(11): 3594-3598. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201011040.htm
|
|
黄波林, 殷跃平, 张枝华, 等, 2019. 三峡工程库区岩溶岸坡消落带岩体劣化特征研究[J]. 岩石力学与工程学报, 38(9): 1786-1796. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201909006.htm
|
|
黄波林, 殷跃平, 李滨, 等, 2020. 三峡工程库区岩溶岸坡岩体劣化及其灾变效应[J]. 水文地质工程地质, 47(4): 51-61. https://www.cnki.com.cn/Article/CJFDTOTAL-SWDG202004007.htm
|
|
刘才华, 徐健, 曹传林, 等, 2005. 岩质边坡水力驱动型顺层滑移破坏机制分析[J]. 岩石力学与工程学报, 24(19): 3529-3533. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200519020.htm
|
|
刘康琦, 刘红岩, 祁小博, 2020. 基于强度折减法的土石混合体边坡长期稳定性研究[J]. 工程地质学报, 28(2): 327-334. https://www.cnki.com.cn/Article/CJFDTOTAL-GCDZ202002013.htm
|
|
刘新荣, 傅晏, 王永新, 等, 2009. 水-岩相互作用对库岸边坡稳定的影响研究[J]. 岩土力学, 30(3): 613-616, 627. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200903008.htm
|
|
罗雲丰, 2015. 澜沧江苗尾水电站右岸坝肩边坡长期稳定性评价[D]. 成都: 成都理工大学.
|
|
孟伟超, 2021. 膨胀土干湿循环对膨胀力和抗剪强度的影响[J]. 铁道勘察, 47(6): 55-60. https://www.cnki.com.cn/Article/CJFDTOTAL-TLHC202106011.htm
|
|
任意, 江兴元, 吴长虹, 等, 2022. 干湿循环下红黏土斜坡裂隙性和水土响应试验研究[J]. 水利水电技术(中英文), 53(4): 172-179. https://www.cnki.com.cn/Article/CJFDTOTAL-SJWJ202204016.htm
|
|
三峡库区地质灾害防治工作指挥部, 2014. 三峡库区地质灾害防治工程地质勘查技术要求[M]. 武汉: 中国地质大学出版社: 0-119.
|
|
汤连生, 张鹏程, 王思敬, 2002a. 水-岩化学作用的岩石宏观力学效应的试验研究[J]. 岩石力学与工程学报, 21(4): 526-531. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200204014.htm
|
|
汤连生, 张鹏程, 王思敬, 2002b. 水-岩化学作用之岩石断裂力学效应的试验研究[J]. 岩石力学与工程学报, 21(6): 822-827. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200206014.htm
|
|
王如宾, 徐卫亚, 孟永东, 等, 2014. 锦屏一级水电站左岸坝肩高边坡长期稳定性数值分析[J]. 岩石力学与工程学报, 33(S1): 3105-3113. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2014S1072.htm
|
|
闫国强, 黄波林, 王勋, 等, 2021. 基于岩体劣化顺层灰岩岸坡滑移-弯曲失稳机理和评价[J]. 工程地质学报, 29(3): 668-679. https://www.cnki.com.cn/Article/CJFDTOTAL-GCDZ202103010.htm
|
|
闫金凯, 黄俊宝, 李海龙, 等, 2020. 台风暴雨型浅层滑坡失稳机理研究[J]. 地质力学学报, 26(4): 481-491. doi: 10.12090/j.issn.1006-6616.2020.26.04.041
|
|
杨何, 汤明高, 许强, 等, 2020. 三峡库区消落带岸坡岩体劣化特性测试及质量评价[J]. 水利学报, 51(11): 1360-1371. https://www.cnki.com.cn/Article/CJFDTOTAL-SLXB202011006.htm
|
|
张景昱, 宛良朋, 潘洪月, 等, 2017. 考虑水-岩作用特点的典型岸坡长期稳定性分析[J]. 岩土工程学报, 39(10): 1851-1858. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201710019.htm
|
|
张枝华, 杜春兰, 余姝, 等, 2018. 三峡库区巫峡箭穿洞危岩体稳定性分析及防治工程设计[J]. 中国地质灾害与防治学报, 29(2): 48-54. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGDH201802008.htm
|
|
周济芳, 2021. 酸性溶液作用下岩石浸泡时间尺度及劣化预测模型研究[J]. 水利水电技术(中英文), 52(8): 162-171. https://www.cnki.com.cn/Article/CJFDTOTAL-SJWJ202108016.htm
|
Figures(13) / Tables(3)
Website Copyright © Journal of Geomechanics 京ICP备18031784号 Total visits：
Supported by:
Beijing Renhe Information Technology Co., Ltd.
DownLoad:
