土工基础

›› 2018, Vol. 32 ›› Issue (1): 69-74.

• 工程实录 • 上一篇    下一篇

湿热环境下碎屑岩滑坡体变形破坏机制分析

何 锋1，向 锐2   

  1. (1.中交铁道（武汉）建设科技有限公司，武汉 430100；
    2.中国公路工程咨询集团有限公司，北京 100089)
  • 收稿日期:2017-02-24 修回日期:2017-03-08 出版日期:2018-02-20 发布日期:2018-03-01
  • 作者简介:何 锋（1984-），男，工程师，研究方向为地铁基坑及结构设计。

Analysis of Deformation-Failure Mechanism of Clastic Rock Slopes in Tropical Humid Environments

HE Feng1， XIANG Rui2   

  1. （1.CCC Railway Consulting (Wuhan)  Co. Ltd., Wuhan 430100；
    2.China Highway Engineering Consulting Co. Ltd., Beijing 100089）
  • Received:2017-02-24 Revised:2017-03-08 Online:2018-02-20 Published:2018-03-01

摘要： 碎屑岩滑坡变形体是广西湿热气候环境下具有群发性特点的典型滑坡体。基于前期地质调查和地质勘探成果，布设滑动式测斜仪和磁环沉降水位检测尺，对变形体内部变形和水位进行长期监测，获得了可靠的监测数据。通过对监测数据的分析，建立了测斜变形曲线，得到了滑动体变形形态与变形曲线相对应的关系，揭示了滑动带的位置，阐明了滑动变形—破坏机制，得出了碎屑岩滑坡主要受强降雨和人类工程活动等诱发因素影响，也受滑坡体自身地质构造控制的结论，从而为湿热环境下碎屑岩滑坡治理和防灾减灾提供了科学依据。

关键词: 湿热环境, 碎屑岩, 滑坡, 测斜仪, 变形监测

Abstract: The frequent occurred landslides in the clastic rock is a common geohazard in Guangxi’s tropical humid environment. Based on the site geological investigation and geotechnical exploration results, a longterm slope deformation monitoring was developed by installing the inclinometers, magnetic extensometers and groundwater monitoring device at various locations of a sliding slope. The sliding surface was identified throughout the deformation of the inclinometers. The deformationfailure mechanism was able to be developed. It is recognized that the landslide in the clastic rock slopes is strongly affected by the heavy precipitation and human activities. The tectonic structure of the slope is also contributed to the landslide hazards.

Key words: tropical humid environment, clastic rock, landslide, slope inclinometers, deformation monitoring