Base on permeability of landslide and reservoir water change to research variational regularity of landslide stability

SONG Kun; YAN E-chuan; ZHU Da-peng; ZHAO Qing-yuan

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Base on permeability of landslide and reservoir water change to research variational regularity of landslide stability

更新时间：2026-06-25

- Base on permeability of landslide and reservoir water change to research variational regularity of landslide stability
- Vol. 32, Issue 9, (2011)
- 作者机构：
  
  1. 中国地质大学（武汉）工程学院,武汉,430074
  2. 教育部长江三峡库区地质灾害研究中心,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： P642
- Online First：13 September 2011，
  
  Published：2011
- 稿件说明：
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SONG Kun, YAN E-chuan, ZHU Da-peng, et al. Base on permeability of landslide and reservoir water change to research variational regularity of landslide stability[J]. 2011, 32(9).
DOI：

SONG Kun, YAN E-chuan, ZHU Da-peng, et al. Base on permeability of landslide and reservoir water change to research variational regularity of landslide stability[J]. 2011, 32(9). DOI：

摘要

在三峡工程试运行期间，库区滑坡因地质结构和渗透性的不同，其变形情况存在明显差异，因此，除研究滑坡地质结构外，还应加强不同渗透性滑坡在库水变动下的稳定性响应规律研究。以三峡水库库首区黄荆树滑坡实例为计算模型，分析库水位在175～145 m间以0.5～2.0 m/d变化时4种不同渗透性滑坡的渗流场特征；再以库水影响系数? 和稳定性变化率为评价指标，研究在滑体渗透性和库水变动条件下的滑坡稳定性变化规律。研究表明，当库水影响系数? 在-0.107～-0.322时，稳定性变化率? 最大，且随? 减小滑坡稳定性增加率? 减小；当? 在-0.644～-769.231时，随? 减小稳定性增加率? 变化不明显；当? 在576.923～769.231时，库水位上升时滑坡稳定性降低较少；当? 在0.107～384.615时，影响系数? 与稳定性变化率? 的相关性不明显。其结果对于库区滑坡的监测预警有较强的应用价值

Abstract

During the trial operation of the Three Gorges Project

there are remarkable differences between the deformation of landslides due to different geological conditions and permeabilities. Therefore

besides the geological structure

more attention should be paid to study the regularity of stability variation of different permeability landslides under the condition of reservoir level change. Taking the Huangjingshu landslide at the head area of the Three Gorges as the computation model

the seepage field of 4 landslides with different permeabilities are studied as the water level changes at a steady speed from 0.5 m/d to 2.0 m/d. As the evaluation index

reservoir water influence coefficient

the ratio of water level change speed to permeability coefficient

and stability change ratio is proposed. And the regularity of stability variation is obtained under the condition of permeability and water level change. The results show that when the reservoir water influence coefficient ? changes from -0.107 to -0.322

the stability change ratio ? is the largest; and the ? decreases as ? reduces. When ? changes from-0.644 to -769.231

the ? almost unchanged as ? decreased. When ? changes from 576.923 to 769.231

the reservoir filling had less effect on the landslide stability. When α changes from 0.107 to 384.615

the correlation of ? and ? is not obvious. It has some values for the landslide monitoring and warning in the Three Gorges reservoir area

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