SIMULATION ANALYSIS OF THE INFLUENCE OF THE RESERVOIR WATER LEVEL FLUCTUATION RATE ON THE STABILITY OF SHUANGJIAPING ACCUMULATION LANDSLIDE IN YA'AN

LI Peng-yue; BA Ren-ji; NI Hua-yong; WANG Dong-hui

2017 Vol. 23, No. 2

Article Contents

Article navigation > Journal of Geomechanics > 2017 > 23(2): 288-295

Next Article Previous Article

LI Peng-yue, BA Ren-ji, NI Hua-yong, WANG Dong-hui. SIMULATION ANALYSIS OF THE INFLUENCE OF THE RESERVOIR WATER LEVEL FLUCTUATION RATE ON THE STABILITY OF SHUANGJIAPING ACCUMULATION LANDSLIDE IN YA'AN[J]. Journal of Geomechanics, 2017, 23(2): 288-295.

Citation:

SIMULATION ANALYSIS OF THE INFLUENCE OF THE RESERVOIR WATER LEVEL FLUCTUATION RATE ON THE STABILITY OF SHUANGJIAPING ACCUMULATION LANDSLIDE IN YA'AN

Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, Sichuan, China

Received Date: 30 August 2016

Publish Date: 25 April 2017

Abstract

Abstract

The stability of reservoir bank slope after impounding has been a hotspot for research, the periodic fluctuation of the reservoir water level can change the seepage field of the slope and then affect its stress field which can induces the deformation of the rock-soil mass. The effect of the reservoir water level fluctuation is especially significant for the stability of the landslide.In this paper, Shuangjiaping landslide at the Pubugou Hydropower Station Reservoir Area is chosen as the research object.On the basis of investigation and analysis, according to the theory of unsaturated soil mechanics, taking the soil-water characteristic curve and permeability into consideration, the stability and seepage value of Shuangjiapingaccumulation landslide under steady-transient conditions were calculated under the action of reservoir. Using the Seep module of GeoStudio software to simulate the landslide groundwater fluctuation under the action of reservoir, the changes of the internal seepage field in accumulation landslide under different reservoir fluctuation conditions were calculated and the results are coupled to the stability calculationin the slopemodule.The study results show that, as the water level rising, the landslide stability rise at first then get lower, and the higher the rate of elevation, the greater the extent of the decrease of the landslide stability. In water level decline phase, the stability of the landslide shows the trend first reduce gradually recover, and the higher the water level decline rate, the lower the extent of the decrease of the landslide stability.The study results have an important significance for the geological disaster monitoring and early warning, disaster prevention and mitigation, regulation of the storage capacity of reservoirs.
- landslide /
- the rate of reservoir water level fluctuation /
- seepage /
- numerical analysis /
- stability

FullText(HTML)

References

[1]	郑万模, 巴仁基, 刘宇杰, 等. 大渡河流域地质灾害详细调查成果集成与综合研究报告[R]. 成都: 中国地质调查局成都地质调查中心, 2015. Google Scholar ZHENG Wan-mo, BA Ren-ji, LIU Yu-jie, et al.The Dadu River basin with geological disaster survey and integrated comprehensive research report[R]. Chengdu: Chengdu Center, China Geological Survey, 2015. Google Scholar
[2]	张加桂.三峡库区巫山县新城址王家屋场滑坡研究[J].地质力学学报, 1999, 5(2): 21~28. Google Scholar ZHANG Jia-gui.Research on Wangjiawuchang landslide in the newly built Wushan County, the Three-Gorges Reservoir region[J]. Journal of Geomechanics, 1999, 5(2): 21~28. Google Scholar
[3]	杨达源, 李徐生, 冯立梅, 等.长江三峡库区崩塌滑坡的初步研究[J].地质力学学报, 2002, 8(2): 173~178. Google Scholar YANG Da-yuan, LI Xu-sheng, FENG Li-mei, et al. Pilot study on the collapses and landslidesof the Three Gorge Reservoir of the Changjiang River[J]. Journal of Geomechanics, 2002, 8(2): 173~178. Google Scholar
[4]	廖红建, 盛谦, 高石夯, 等.库水位下降对滑坡体稳定性的影响[J].岩石力学与工程学报, 2005, 24(19): 3454~3458. doi: 10.3321/j.issn:1000-6915.2005.19.008 CrossRef Google Scholar LIAO Hong-jian, SHENG Qian, GAO Shi-hang, et al. Influence of drawdown of reservoir water level on landslide stability[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(19): 3454~3458. doi: 10.3321/j.issn:1000-6915.2005.19.008 CrossRef Google Scholar
[5]	黄栋, 乔建平, 张小刚.库水位变化对库岸滑坡稳定性影响的预测研究[J].长江科学院院报, 2012, 29(9): 103~106. Google Scholar HUANG Dong, QIAO Jian-ping, ZHANG Xiao-gang.Prediction of landslide stability of reservoir bank under the influence of water level fluctuation[J]. Journal of Yangtze River Scientific Research Institute, 2012, 29(9): 103~106. Google Scholar
[6]	陶宏亮, 范士凯, 徐光黎, 等.库水位变化条件下堆积体滑坡变形特征及稳定性分析[J].水电能源科学, 2014, 32(5): 96~100. Google Scholar TAO Hong-liang, FAN Shi-kai, XU Guang-li, et al. Deformation and stability of collapse and gliding landslide with changes of water level[J]. Water Resources and Power, 2014, 32(5): 96~100. Google Scholar
[7]	中村浩之.论水库滑坡[J].王恭先, 译.水土保持通报, 1990, 10(1): 53~64, 35. Google Scholar ZHONG Cun-hao-zhi.On reservoir landslide[J]. WANG Gong-xian, Trans. Bulletin of Soil and Water Conservation, 1990, 10(1): 53~64, 35. Google Scholar
[8]	胡畅, 牛瑞卿.三峡库区树坪滑坡变形特征及其诱发因素研究[J].安全与环境工程, 2013, 20(2): 41~45, 58. Google Scholar HU Chang, NIU Rui-qing.Study on deformation characteristics and induction factors of Shupinglandslide in Three Gorges Reservoir area[J]. Safety and Environmental Engineering, 2013, 20(2): 41~45, 58. Google Scholar
[9]	刘才华, 陈从新, 冯夏庭, 等.地下水对库岸边坡稳定性的影响[J].岩土力学, 2005, 26(3): 419~422. Google Scholar LIU Cai-hua, CHEN Cong-xin, FENG Xia-ting, et al. Effect of groundwater on stability of slopes at reservoir bank[J]. Rock and Soil Mechanics, 2005, 26(3): 419~422. Google Scholar
[10]	涂国祥, 邓辉, 黄润秋.水位变动速度对某库区岸坡堆积体稳定性的影响[J].四川大学学报(工程科学版), 2011, 43(4): 63~70. Google Scholar TU Guo-xiang, DENG Hui, HUANG Run-qiu.Influence on a bank slope accumulations' stability of the rising or falling speed of a reservoir water level[J]. Journal of Sichuan University (Engineering Science Edition), 2011, 43(4): 63~70. Google Scholar
[11]	乐琪浪, 王洪德, 薛星桥, 等.三峡库区水位变化与花园养鸡厂滑坡变形特征关系[J].水文地质工程地质, 2011, 38(6): 68~73. Google Scholar LE Qi-lang, WANG Hong-de, XUE Xing-qiao, et al. Relationship between the deformation features of the Huayuanyangjichang landslide and water level changes in the Three Gorges Reservoir area[J]. Hydrogeology & Engineering Geology, 2011, 38(6): 68~73. Google Scholar
[12]	杨金, 简文星, 杨虎锋, 等.三峡库区黄土坡滑坡浸润线动态变化规律研究[J].岩土力学, 2012, 33(3): 853~857. Google Scholar YANG Jin, JIAN Wen-xing, YANG Hu-feng, et al. Dynamic variation rule of phreatic line in Huangtupo landslide in Three Gorges reservoir area[J]. Rock and Soil Mechanics, 2012, 33(3): 853~857. Google Scholar
[13]	原先凡, 邓华锋, 蔡健, 等.库水位升降条件下邻近坝址区堆积体边坡稳定性分析[J].水电能源科学, 2013, 31(9): 135~137. Google Scholar YUAN Xian-fan, DENG Hua-feng, CAI Jian, et al. Stability analysis of talus slope near dam site under reservoir water level rise and fall condition[J]. Water Resources and Power, 2013, 31(9): 135~137. Google Scholar
[14]	杨强, 叶振南, 高幼龙.库水波动条件下滑坡体消落带响应关系研究[J].灾害学, 2014, 29(2): 29~32. Google Scholar YANG Qiang, YE Zhen-nan, GAO You-long.Response relationship of riparian zone of the landslide mass with reservoir water fluctuation conditions[J]. Journal of Catastrophology, 2014, 29(2): 29~32. Google Scholar
[15]	肖志勇, 邓华锋, 李建林, 等.库水位间歇性下降对堆积体滑坡稳定性的影响[J].长江科学院院报, 2016, 33(8): 114~119. doi: 10.11988/ckyyb.20150486 CrossRef Google Scholar XIAO Zhi-yong, DENG Hua-feng, LI Jian-lin, et al. Influence of intermittent drawdown of reservoir water level on the stability of accumulation landslide[J]. Journal of Yangtze River Scientific Research Institute, 2016, 33(8): 114~119. doi: 10.11988/ckyyb.20150486 CrossRef Google Scholar
[16]	Fredlund D G, Xing A Q, Huang S Y. Predicting the permeability function for unsaturated soils using the soil-water characteristic curve[J]. Canadian Geotechnical Journal, 1994, 31(4): 533~546. doi: 10.1139/t94-062 CrossRef Google Scholar