土工基础

›› 2016, Vol. 30 ›› Issue (2): 123-126.

• 工程实录 • 上一篇    下一篇

龙家岩多级滑坡形成机理分析及防治技术探讨

吴维义1,2   

  1. （1.贵州大学资源与环境工程学院,贵阳 550025;2.贵州省交通设计研究院股份有限公司,贵阳 550007）
  • 收稿日期:2015-07-24 出版日期:2016-04-20 发布日期:2016-04-27
  • 作者简介:吴维义（1989-），男，硕士研究生，研究方向为岩土工程与地质工程。

Characterization and Mitigation of the Longjiayan Multi-Staged Landslide

WU Weiyi1,2   

  1. (1. Guizhou University, Guiyang 550025; 2.Guizhou Transportation Planning Survey Design Academy Co., Ltd., Guiyang 550007)
  • Received:2015-07-24 Online:2016-04-20 Published:2016-04-27

摘要： 在我国西部地区，由于受特殊的地形地质条件影响, 滑坡灾害已成为制约地区经济持续稳定发展的因素之一,其中多级滑坡由于其形成机理复杂，在工程建设中往往造成计算所得的剩余下滑力过大，导致治理非常困难；以贵州省沿河县沙子镇龙家岩多级滑坡为例，通过野外调研、钻探、深部位移监测等资料着重分析了滑坡的形成机理，以此为据采用分级治理的思路对滑坡作了稳定性评价，提出了以抗滑桩为主的治理方案，最后采用ANSYS软件对h型抗滑桩的受力特征进行了有限元计算。该分析思路对类似工程的研究具有参考价值。

关键词: 多级滑坡, 滑坡机理, 分级治理, h型抗滑桩, ANSYS

Abstract: The conventional design methods for estimating the sliding forces in the multistaged landslides are usually over conservative due to their complexity. As a result of the excessively large driving forces, the mitigation scheme usually becomes very difficult. This paper presents a case history of the Longjiayan landslide mitigation. The landslide characterization was performed and the multistaged mitigation program was selected based on the stability analysis results. The drilled piers were utilized to resist the potential sliding and the performance of the "h" typed drilled piers was analyzed by using the commercial finite element software ANSYS.

Key words: Multi-Staged Landslides, Landslide Mechanism, Multi-Staged Mitigation, H-Shaped Drilled Piers, Software ANSYS