三峡工程库区巴东县赵树岭滑坡稳定性与防治对策研究

唐辉明; 马淑芝; 刘佑荣; 贾洪彪

三峡工程库区巴东县赵树岭滑坡稳定性与防治对策研究

中国地质大学工程学院, 湖北武汉 430074

基金项目:

国家自然科学基金项目 40072085

详细信息

作者简介:
唐辉明(1962-), 男, 教授, 博士生导师, 主要从事地质工程、岩土工程的教学与研究工作

中图分类号: P642.22
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- 被引次数: 0
出版历程
- 收稿日期: 2002-06-20
- 刊出日期: 2002-09-25

Stability and Control Measures of Zhaoshuling Landslide, Badong County, Three Gorges Reservoir

摘要

摘要: 赵树岭滑坡是三峡工程库区的重要滑坡, 其稳定性直接关系到巴东新县城沿江大道的安全, 并对新县城土地利用意义重大.在阐述赵树岭滑坡基本特征的基础上, 运用水岩耦合三维有限元数值方法模拟了滑坡稳定性, 预测了三峡水库蓄水后滑坡稳定性发展趋势和渗流特征.研究表明, 水库蓄水及水位波动是影响滑坡稳定性的主要因素, 三峡水库蓄水后, 滑坡将发生局部失稳, 必须加以治理.提出了滑坡防治的原则与对策
- 三峡工程 /
- 赵树岭滑坡 /
- 滑坡稳定性 /
- 滑坡防治
Abstract: The safety of the Zhaoshuling landslide, one of the most important landslides in the Three Gorges Reservoir, is directly related to that of Yanjiang Road which is located along the Changjiang River, and is also important to the land use of the Badong County, a new established county. This paper first describes the essential features of the Zhaoshuling landslide, and then presents the simulation of landslide stability using 3D finite element method for water stress coupling, and the forecasting of the landslide stability trend and permeability features after the Three Gorges Reservoir is in operation. The research shows that the change in the reservoir water is the major factor to affect the stability of the landslide. After the Three Gorges Reservoir is in operation, some parts of the landslide will turn instable. In this sense, this paper offers some principles and counter measures to prevent and treat the landslide.
- Three Gorges Reservoir project /
- Zhaoshuling landslide /
- landslide stability /
- landslide control

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图 1 计算区域地质模型

Fig. 1. Geological model of computing area

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图 2 有限元计算网格

Fig. 2. Meshes of finite element model

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图 3 工况五泄水15 d时纵剖面主应力矢量图

Fig. 3. Vectogram of principal stress in situation 5

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图 4 工况五泄水15 d时纵剖面应力场模拟结果

a.x方向应力等值线; b.y方向应力等值线; c.z方向应力等值线; d.最大剪应力等值线; e.由175 m水位泄水15 d时位移矢量; f.塑性区

Fig. 4. Modeling results of stress field in situation 5

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图 5 工况五泄水不同时间的渗流场模拟结果

Fig. 5. Modeling results of permeability field in situation 5

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表 1 有限元计算参数

Table 1. Coeffecients of finite element simulation

参考文献(2)

[1]	唐辉明, 晏鄂川, 胡新丽. 工程地质数值模拟的理论与方法[M]. 武汉: 中国地质大学出版社, 2001. TANG H M, YAN E C, HU X L. Principles and applications of numerical modeling in engineering geology [M]. Wuhan: China University of Geosciences Press, 2001.
[2]	殷跃平. 长江三峡工程库区滑坡防治工程设计与施工技术规程[M]. 北京: 地质出版社, 2001. YIN Y P. The technology criterion of prevent engineering designing and constructing of landslides in Three Gorges Reservoir Area[M]. Beijing: Geological Publishing House, 2001.