Numerical subarea of sensitive zone of monitoring variable of landslides to fluctuation of water level of Three Gorges Reservoir — a case of Xietan Landslide

ZHANG Zhen-hua; LUO Xian-qi; WU Jian; LIU Si-chun; WANG Zhi-jian

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Numerical subarea of sensitive zone of monitoring variable of landslides to fluctuation of water level of Three Gorges Reservoir — a case of Xietan Landslide

更新时间：2026-06-25

- Numerical subarea of sensitive zone of monitoring variable of landslides to fluctuation of water level of Three Gorges Reservoir — a case of Xietan Landslide
- Vol. 27, Issue S2, (2006)
- 作者机构：
  
  1. 三峡大学三峡库区地质灾害教育部重点试验室,宜昌,443002
  2. 中国科学院武汉岩土力学研究所,武汉,430071
  3. 宜昌三大工程建设监理公司,宜昌,443002
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU452
- Online First：16 December 2006，
  
  Published：2006
- 稿件说明：
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ZHANG Zhen-hua, LUO Xian-qi, WU Jian, et al. Numerical subarea of sensitive zone of monitoring variable of landslides to fluctuation of water level of Three Gorges Reservoir — a case of Xietan Landslide[J]. 2006, 27(S2).
DOI：

ZHANG Zhen-hua, LUO Xian-qi, WU Jian, et al. Numerical subarea of sensitive zone of monitoring variable of landslides to fluctuation of water level of Three Gorges Reservoir — a case of Xietan Landslide[J]. 2006, 27(S2). DOI：

摘要

在三峡水库蓄水和运行条件下，三峡库区水库型滑坡（以泄滩滑坡为例）不同部位的地下水位和位移的改变表现出对库水位变化的敏感程度不同的特征。根据监测变量（位移与地下水位）的变化对库水变化敏感程度的不同与监测信息量获取大小的关系，采用模糊模式识别方法对三峡库区泄滩滑坡地下水位及位移场变化对水库水位变化的敏感程度进行数值分区。数值分区结果表明：库水位对坡体地下水位的影响部位集中在滑坡的中前部；滑坡体中前部浅层土体水平位移在库水蓄水和骤降过程中表现得很敏感，随着坡体高程和土体深度的增加，土体水平位移变化表现得逐渐不敏感；滑体浅层土体的垂直位移变化对库水位的变化表现得很敏感，随着土体深度的增加，坡内土体的垂直位移变化对库水位变化的敏感程度逐渐减小。借助泄滩滑坡监测变量敏感程度数值分区规律，给出三峡库区水库型滑坡地下水位与位移监测点布设的建议。

Abstract

In the period of impounding and running of the Three Gorges Reservoir

the sensitive degrees of change of groundwater table and displacement to the fluctuation of water level are different in different parts of landslides induced by the fluctuation of water level (as the case of Xietan Landslide). According to the relationship between different sensitive degrees of monitoring variables (underground water level and displacement) and quantity of monitoring information

the sensitive zones of groundwater table and displacement to the fluctuation of reservoir water level are divided into different degrees by the approach of fuzzy pattern recognition. The result of numerical subarea of sensitive zone of groundwater table and displacement indicates that the middle and front part of the landslide are the main places with groundwater table affected by the fluctuation of water level of reservoir; the variation of horizontal displacement of surficial part of the middle and front part of the landslide is more sensitive to water impounding and sudden fall of water level; and with the increase of elevation and depth of the landslide

the horizontal displacement changes less and less; the change of vertical displacement of surficial parts of the landslide is most sensitive to the fluctuation of water level of Three Gorges Reservoir; and with the increase of depth

the change of vertical displacement become smaller and smaller. By the means of the numerical subarea regulation of Xietan Landslide

the suggestions to the point layout for monitoring the groundwater table and displacement in the landside of Three Gorges Reservoir are put forward.

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