长江科学院院报 ›› 2017, Vol. 34 ›› Issue (1): 104-108.DOI: 10.11988/ckyyb.20150929

• 岩土工程 • 上一篇    下一篇

地下水位对雾江滑坡体稳定性的影响

陈勋辉1,2, 黄耀英1, 李春光3, 张如强4, 左全裕4, 林莉2   

  1. 1.三峡大学 水利与环境学院,湖北 宜昌 443002;
    2.黄河上游水电开发有限责任公司大坝管理中心,西宁 810008;
    3.中国科学院 武汉岩土力学研究所,武汉 430071;
    4.湖南涔天河工程建设投资有限责任公司,湖南 永州 425500
  • 收稿日期:2015-11-02 出版日期:2017-01-01 发布日期:2017-01-13
  • 通讯作者: 黄耀英(1977-),男,湖南郴州人,教授,博士,主要从事水工结构安全监控及数值计算方面的研究,(电话)13997662901(电子信箱)huangyaoying@sohu.com。
  • 作者简介:陈勋辉(1989-),男,湖北丹江口人,硕士研究生,主要从事大坝安全监控方面的研究,(电话)18697290067(电子信箱)xunhuichen@sina.com。
  • 基金资助:
    国家自然科学基金项目(51209124)

Influence of Groundwater Level on Landslide Stability at Wujiang

CHEN Xun-hui1,2, HUANG Yao-ying1, LI Chun-guang3, ZHANG Ru-qiang4, ZUO Quan-yu4, LIN Li2   

  1. 1.College of Hydraulic & Environmental Engineering, Three Gorges University, Yichang 443002, China;
    2.Dam Management Center of Yellow River Upstream Hydropower Development Co. Ltd., Xining 810008, China;
    3.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;
    4.Construction Investment Limited Liability Company for Hunan Centianhe Project, Yongzhou 425500, China
  • Received:2015-11-02 Published:2017-01-01 Online:2017-01-13

摘要: 边坡稳定安全系数受多方面因素的影响,其中地下水位线的不同处理方式对边坡稳定的影响较大。由于实际工程问题的复杂性,一般需要基于某种假定获得新的地下水位线。基于极限平衡理论,结合雾江滑坡体工程,对比分析2种地下水位线处理方式对安全系数的影响,同时探讨了不同水位下的的临界地下水位。分析表明:假定库水位与原始地下水位水平直接相连,古滑带安全系数随着水位上升呈现先缓慢增加后逐渐减小的趋势;而假定考虑滑坡体内地下水位变化,古滑带安全系数随着蓄水位的上升呈现逐渐减小的趋势,即考虑库水位引起地下水位变化后,安全系数有一定的降低,安全系数偏于保守;并且不同库水位都存在一个临界地下水位比例系数,且比例系数位于0~1之间。

关键词: 地下水位线, 安全系数, 滑坡体, 稳定性分析, 临界地下水位

Abstract: The factor of slope’s stability safety is influenced by various factors, among which groundwater level processed by different methods has great influence on the stability of slope. Due to the complexity of actual engineering problems, we generally need to obtain new groundwater level based on some assumptions. According to limit equilibrium theory, we compared and analyzed the influences of two different methods of processing groundwater line on the safety factor, and discussed the critical groundwater level corresponding to different reservoir water levels. An ancient landslide at Wujiang was taken as a case study. Result shows that 1) under the assumption that the reservoir water level is directly connected with the original groundwater level, the safety factor of landslide increases slowly and then decreases gradually with water level rising; 2) in consideration of groundwater level fluctuation, the safety factor of landslide tends to decrease with the increase of storage water level, indicating that the safety factor is conservative; 3) the factor of proportionality of critical groundwater level in the presence of different reservoir water level is between 0 and 1.

Key words: groundwater level, safety factor, landslide body, stability analysis, critical groundwater level

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