长江科学院院报 ›› 2011, Vol. 28 ›› Issue (4): 41-44.

• 岩土工程 • 上一篇    下一篇

某库岸滑坡的成因机制及稳定性

王 猛 1 ，石豫川 1 ， 唐兴君 2   

  1. 1. 成都理工大学 地质灾害防治与地质环境保护国家重点实验室，成都 610059 ； 2. 华东勘测设计研究院，杭州 310014
  • 出版日期:2011-04-01 发布日期:2012-11-01

A Case Study of the Mechanism and Stability of Reservoir Bank Landslide

WANG Meng 1 , SHI Yu-chuan 1 , TANG Xing-jun 2   

  1. 1.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of  Technology, Chengdu 610059, China ； 2.East China Survey and Design Institute, Hangzhou 310014, China
  • Online:2011-04-01 Published:2012-11-01

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摘要： 某库岸为典型高山峡谷地貌，斜坡在卸荷作用和重力作用下弯曲拉裂，形成规模巨大的滑坡。水库蓄水后，滑坡可能产生复活，将造成“二道坝”，危及大坝及其它枢纽建筑的安全。结合滑坡区的环境地质条件，滑坡的地质结构特征，分析其形成机制，并在此基础上建立地质力学模型，再现滑坡形成过程。最后采用定量计算、数值模拟法计算滑坡安全系数、应力分布状态等，对滑坡蓄水条件下的变形及稳定性进行研究和预测，从而为滑坡治理工程设计提供依据。

关键词: 滑坡, 弯曲拉裂, 成因机制, 蓄水, 稳定性

Abstract: As the geomorphology of the studied reservoir bank presents typical mountainous and canyon characteristics, bending and ripping deformation of its slope occurs due to unloading and gravity, thus give rise to large scale landslide. The landslide may reactivate after impoundment of the reservior, hence may endanger the safety of the dam and other structures. Based on the environmental geological condition and the geological structure characteristics of the landslide, a geomechanics model has been established to simulate the forming process of the landslide. Finally, quantitative calculation method and numerical simulation method are used to compute landslide safety factor and stress distribution, etc. so as to further study and forecast the deformation and stability under impoundment, and provide basis for engineering design of the treatment.

Key words: landslide  ,   bending and ripping deformation  ,   the formation mechanism  ,  impoundment  ,   stability

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