Disaster analysis and countermeasures of large accumulation in reservoir areas

ZHAN Zheng-gang; CHENG Rui-lin; SUN Wei; ZHANG He-zuo

doi:10.11779/CJGE202201020

Volume 44 Issue 1

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2022 > 44(1): 194-200. > DOI: 10.11779/CJGE202201020

ZHAN Zheng-gang, CHENG Rui-lin, SUN Wei, ZHANG He-zuo. Disaster analysis and countermeasures of large accumulation in reservoir areas[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(1): 194-200. DOI: 10.11779/CJGE202201020

Citation:

PDF (2289 KB)

Disaster analysis and countermeasures of large accumulation in reservoir areas

1.
Power China Guiyang Engineering Corporation Limited, Guiyang 550081, China
2.
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210024, China

More Information

Received Date: April 18, 2021
Available Online: September 22, 2022

Graphical Abstract

Abstract

Abstract

The volume of RS accumulation of RM hydropower station is as large as 47 million m³, which is huge and close to the dam site. In the process of reservoir impoundment, the physical and mechanical parameters of the slope are reduced due to the hydrodynamic effect, which may cause instability and damage to the safety of the project. In this study, the rigid body limit equilibrium method, virtual power method, finite difference method, finite element strength reduction method and three-dimensional numerical simulation are used to analyze the stability and catastrophe process of RS accumulation body. The results show that the slope is basically stable in the natural state, and the possibility of edge stability and instability is great with the rise of water level in the process of water storage. The state of slope stability changes from the process of stability- deformation→local instability large→scale instability→largest→scale instability to the catastrophic process. The simulation reveals the generating process and propagation law of surge under instability, and its risk is analyzed. The research results can provide a meaningful reference for similar engineering problems.
- stability analysis of accumulation,
- safety factor,
- catastrophe analysis,
- surge landslide,
- risk evaluation,
- prevention and control measure

FullText(HTML)

References (12)

References

[1]	王自高. 西南地区深切河谷大型堆积体工程地质研究[D]. 成都: 成都理工大学, 2015. WANG Zi-gao, Engineering Geological Study on Large Quaternary Deposits in the Deeply Valley Southwestern China[D]. Chengdu: Chengdu University of Technology, 2015. (in Chinese)
[2]	王自高, 胡瑞林, 张瑞, 等. 大型堆积体岩土力学特性研究[J]. 岩石力学与工程学报, 2013, 32(增刊2): 3836–3843. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2013S2107.htm WANG Zi-gao, HU Rui-lin, ZHANG Rui, et al. Study of geotechnical mechanical characteristics of a large soil-rock mixture in a hydropower project[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(S2): 3836–3843. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2013S2107.htm
[3]	陈祖煜. 岩质边坡稳定分析: 原理·方法·程序[M]. 北京: 中国水利水电出版社, 2005. CHEN Zu-yu. Rock Slope Stability Analysis: Theory Methods and Programs[M]. Beijing: China WaterPower Press, 2005. (in Chinese)
[4]	徐文杰. 大型土石混合体滑坡空间效应与稳定性研究[J]. 岩土力学, 2009, 30(增刊2): 328–333. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2009S2071.htm XU Wen-jie. Study of spatial effect and stability of large scale soil-rock mixture landslide[J]. Rock and Soil Mechanics, 2009, 30(S2): 328–333. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2009S2071.htm
[5]	张玉, 徐卫亚, 石崇, 等. 大型滑坡堆积体稳定性的三维数值分析[J]. 岩土力学, 2011, 32(11): 3487–3496. doi: 10.3969/j.issn.1000-7598.2011.11.047 ZHANG Yu, XU Wei-ya, SHI Chong, et al. Three-dimensional numerical analysis of stability of large-scale landslide accumulation body[J]. Rock and Soil Mechanics, 2011, 32(11): 3487–3496. (in Chinese) doi: 10.3969/j.issn.1000-7598.2011.11.047
[6]	吴火珍, 冯美果, 焦玉勇, 等. 降雨条件下堆积层滑坡体滑动机制分析[J]. 岩土力学, 2010, 31(增刊1): 324–329. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2010S1053.htm WU Huo-zhen, FENG Mei-guo, JIAO Yu-yong, et al. Analysis of sliding mechanism of accumulation horizon landslide under rainfall condition[J]. Rock and Soil Mechanics, 2010, 31(S1): 324–329. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2010S1053.htm
[7]	王自高, 胡瑞林, 张瑞, 等. 大型堆积体岩土力学特性研究[J]. 岩石力学与工程学报, 2013, 32(增刊2): 3836–3843. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2013S2107.htm WANG Zi-gao, HU Rui-lin, ZHANG Rui, et al. Study of geotechnical mechanical characteristics of a large soil-rock mixture in a hydropower project[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(S2): 3836–3843. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2013S2107.htm
[8]	朱继良, 黄润秋. 某水电站坝前堆积体稳定性的三维数值模拟分析[J]. 岩土力学, 2005, 26(8): 1318–1322. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200508027.htm ZHU Ji-liang, HUANG Run-qiu. Study on stability of talus slope in front of a dam in a huge hydroelectric station by using 3D numerical simulation[J]. Rock and Soil Mechanics, 2005, 26(8): 1318–1322. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200508027.htm
[9]	徐卫亚, 周伟杰, 闫龙. 降雨型堆积体滑坡渗流稳定性研究进展[J]. 水利水电科技进展, 2020, 40(4): 87–94. https://www.cnki.com.cn/Article/CJFDTOTAL-SLSD202004015.htm XU Wei-ya, ZHOU Wei-jie, YAN Long. Research progress on seepage stability of rainfall-induced accumulation landslide[J]. Advances in Science and Technology of Water Resources, 2020, 40(4): 87–94. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SLSD202004015.htm
[10]	杨继红, 王俊梅, 董金玉, 等. 水库蓄水过程中堆积体边坡瞬态稳定性分析[J]. 岩土力学, 2011, 32(增刊1): 464–470. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2011S1084.htm YANG Ji-hong, WANG Jun-mei, DONG Jin-yu, et al. Analysis of transient stability of deposits slope in process of reservoir impounding[J]. Rock and Soil Mechanics, 2011, 32(S1): 464–470. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2011S1084.htm
[11]	孙志亮, 孔令伟, 郭爱国, 等. 地震作用下堆积体边坡的坡面变形与失稳机制[J]. 岩土力学, 2015, 36(12): 3465–3472, 3481. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201512017.htm SUN Zhi-liang, KONG Ling-wei, GUO Ai-guo, et al. Surface deformations and failure mechanisms of deposit slope under seismic excitation[J]. Rock and Soil Mechanics, 2015, 36(12): 3465–3472, 3481. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201512017.htm
[12]	中国电建集团贵阳勘测设计研究院有限公司. 库区滑坡涌浪特征及传播评估[R]. 贵阳: 中国电建集团贵阳勘测设计研究院有限公司, 2017. Power China Guiyang Engineering Co. LTD. Characteristics and Propagation Assessment of Landslide Surge in Reservoir Area[R]. Guiyang: Power China Guiyang Engineering Co. LTD, 2017. (in Chinese)

[1]	XU Yong-fu, CHENG Yan, XIAO Jie, LIN Yu-liang, QI Shun-chao. New prevention and control technology for expansive soil slopes[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(7): 1281-1294. DOI: 10.11779/CJGE202207008
[2]	LU Xian-long, CHEN Xiang-sheng, CHEN Xi. Risk prevention and control of artificial ground freezing (AGF)[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(12): 2308-2314. DOI: 10.11779/CJGE202112018
[3]	CAO Ping, LI Hao-yue. Instability mechanism and control measures of surrounding rock in deep tunnel under high lateral pressures[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(12): 2262-2271. DOI: 10.11779/CJGE201612015
[4]	YANG Jian-hua, LU Wen-bo, YAN Peng, YAO Chi, ZHOU Chuang-bing, WANG Zhi-liang. Prevention method for rock bursts based on control of dynamic effects caused by transient release of in situ stresses[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(1): 68-75. DOI: 10.11779/CJGE201601006
[5]	FANG Kai, ZHANG Zhong-miao, LIU Xing-wang, LUO Jia-cheng. Pollution of construction waste slurry and prevention measures[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 238-241.
[6]	WANG Ming-wu, CHEN Guang-yi, JIN Ju-liang. Risk evaluation of surrounding rock stability based on stochastic simulation of multi-element connection number and triangular fuzzy numbers[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(4): 643.
[7]	Comprehensive geological prediction based on risk evaluation during tunneling in karst area[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(7).
[8]	HUANG Qiangbing, PENG Jianbing, FAN Hongwei, YANG Peimin, MEN Yuming. Metro tunnel hazards induced by active ground fissures in Xi’an and relevant control measures[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(5): 781-788.
[9]	ZHENG Mingxin, YIN Zongze, WU Jimin, DU Yufei, LUAN Yu. Post-fuzzy comprehensive evaluation of effectiveness of landslide control[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(10): 1224-1229.
[10]	CHEN Hongqi, HUANG Runqiu, PENG Jianbing. Study on the seismic ground fracturing hazard and its prevention in engineering site[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(5): 574-577.