土工基础

›› 2018, Vol. 32 ›› Issue (2): 138-141.

• 工程实录 • 上一篇    下一篇

四川青川某不稳定斜坡应急治理方案研究

罗东生1，龙 行2，张 凯3，褚晶磊3   

  1. （1.广东省建筑设计研究院，广州 510010；2.中国路桥工程有限责任公司，北京 100011；
    3.西南交通大学土木工程学院，成都 610031）
  • 收稿日期:2017-12-07 修回日期:2017-12-15 出版日期:2018-04-30 发布日期:2018-05-09
  • 作者简介:罗东生（1988-），男，工程师，研究方向为岩土工程勘察、地基基础检测。

Emergency Response for the Stabilization of a Mountain Slope in Qingchuan, Sichuan Province

LUO Dongsheng1, LONG Xing2, ZHANG Kai3， CHU Jinglei3   

  1. (1.Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010；
    2.China Road and Bridge Co. Ltd., Beijing 100011；
    3.Department of Geotechnical Engineering, Southwest Jiaotong University, Chengdu 610031)
  • Received:2017-12-07 Revised:2017-12-15 Online:2018-04-30 Published:2018-05-09

摘要： 5.12汶川特大地震诱发四川多地发生滑坡、崩塌等地质灾害。在暴雨及余震的影响下，山体不稳定斜坡产生滑坡的概率较大，为保障人民群众生命财产安全，需对不稳定斜坡进行应急处理。以青川县某山体不稳定斜坡为例，根据相关规范并结合该潜在滑体的特点，采用数值模拟分析了该山体某处斜坡的稳定性。结果表明：该斜坡潜在滑体在暴雨状态加7度地震条件下稳定性系数为1.07，处于基本稳定状态，但坡面上残留较多危岩块石，未来可能在暴雨和地震的情况下发生崩塌，经综合比较提出采用清方+主动防护网+被动防护网的治理方案。研究结果可供有关单位对滑坡采取防治措施时参考。

关键词: 不稳定斜坡, 数值分析, 稳定性分析, 应急治理方案

Abstract: The 5.12 Wenchaun earthquake resulted numerous geohazards such as soil and rock slides. Under the influence of heavy precipitation and aftershocks, the probability of slides in the slopes increases significantly and it is necessary to mitigate the hazard to ensure the safety of life and properties. This paper presents a case history of the mitigation of an unstable slope in Qingchuan County. The stability of the of the slope was analyzed through numerical simulation in accordance with the current code requirements. The results indicate that, under the strong precipitation and an earthquake magnitude of 7.0, the factor of safety of the slope is 1.07, which is marginally stable. The site visual inspection indicates that there are loose rocks accumulated on the slope due to the earthquake. These rocks are the potential safety hazards to the public since they could be fell down due to the rain or seismic actions. The mitigation measures include the removal of loosen rock, active and passive rock nets.

Key words: Unstable Slopes, Numerical Analysis, Stability Analysis, Emergency Response for Stabilization