土工基础

›› 2016, Vol. 30 ›› Issue (2): 127-130.

• 工程实录 • 上一篇    下一篇

奉节县孙家湾滑坡稳定性分析

於 智，毛成文   

  1. （长江三峡勘测研究院有限公司(武汉)，武汉 430074）
  • 收稿日期:2016-01-07 出版日期:2016-04-20 发布日期:2016-04-27
  • 作者简介:於 智（1989-），男，助理工程师，研究方向为工程地质勘察。

Stability Analysis of a Landslide in Fengjie Eco-Friendly Immigration Industrial Park

YU Zhi， MAO Chengwen   

  1. （Three Gorges Geotechnical Consultants Co. Wuhan, Ltd., Wuhan, 430074）
  • Received:2016-01-07 Online:2016-04-20 Published:2016-04-27

摘要： 孙家湾滑坡位于奉节县移民生态工业园内，草堂河支流石马河右岸，处于三峡库水位回水线影响范围内。通过对孙家湾滑坡的地形地貌、地层岩性与水文地质条件的勘察，研究孙家湾滑坡的形成机制，在此基础上，采用北京理正岩土计算软件计算SJW3-3’剖面稳定性。计算结果表明，孙家湾滑坡在不同工况下均处于整体稳定状态，但当三峡库水位由175 m骤降时，滑坡前缘可能会发生局部变形，极端条件下有产生圆弧滑动的可能。建议采取适当、合理的工程措施予以防治。

关键词: 移民生态工业园, 孙家湾滑坡, 稳定性计算

Abstract: The Sunjiawan Landslide is occurred in the EcoFriendly Immigration Industrial Park in Fengjie County, Chongqing City. It is located at the right bank of the Shima River which is a tributary of the Caotang River. The landslide location is also within the operational pool water level. The triggering factors of the landslide were evaluated based on the geotechnical, physiographical and hydrological investigations and the stability was analyzed at cross section SJW33 by using a commercial software. The results indicate that the slope could be stable at the normal operation conditions, however, Local failure at the existing landslide when a rapid drawdown condition occurred at a pool water level elevation of 175 m. Under the extreme conditions, circular failure mode might be triggered. Appropriate engineering mitigation measures are necessary.

Key words: Eco-Friendly Immigration Industrial Park, Sunjiayuan Landslide, Slope Stability Analysis