土工基础

›› 2017, Vol. 31 ›› Issue (1): 25-28.

• 工程实录 • 上一篇    下一篇

基于监测数据的某高速公路碎石土滑坡稳定性评价

周轩漾 1,2，张可能 1,2，李 懿 1,2   

  1. （1.有色金属成矿预测与地质环境监测教育部重点实验室，长沙 410083； 2.中南大学地球科学与信息物理学院，长沙 410083）
  • 收稿日期:2016-01-23 修回日期:2016-01-24 出版日期:2017-02-20 发布日期:2017-02-24
  • 作者简介:周轩漾（1989-），男，硕士研究生，研究方向为岩土工程及地质灾害治理。

Stability Evaluation for a Debris Landslide on an Expressway Based on the Monitored Data

ZHOU Xuanyang1,2, ZHANG Keneng1,2,  LI Yi1,2   

  1. （1.Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environmental Monitoring, Ministry of Education, Changsha, 410083;
    2.School of Geosciences and InfoPhysics, Central South University, Changsha, 410083）
  • Received:2016-01-23 Revised:2016-01-24 Online:2017-02-20 Published:2017-02-24

摘要： 以某高速公路K121+100~+330段碎石土滑坡为工程背景，以现场监测为基础，得到该滑坡滑动面的位置，评价滑坡的稳定性，为后期的滑坡防治提供理论依据。主要研究结论：（1）通过对监测资料的反馈分析,得到主滑段滑动面特征，为工程安全施工、运营提供可靠保证；（2）运用传递系数法研究滑坡稳定性，比较两种工况，推断暴雨是滑坡稳定性降低的重要因素。

关键词: 碎石土滑坡, 测斜仪, 变形监测, 传递系数法

Abstract: Landslides in the existing soil and rock debris slopes are one of the major hazards in highway projects. In this paper, the subsurface hydrological and geological conditions of the landslide were introduced in details on a debris landslide at an expressway between station K121+100 and +330. The slip surface was determined from the site monitoring data. The main evaluation results are: 1) the slip surface of the landslide was able to be determined from the site monitoring data. The accurate determination of the slip surface from the monitored data is essential to the landslide mitigation construction and the safe operation of the highway. 2) The landslide was evaluated with the transfer coefficient method under two extreme loading conditions. It is concluded that the heavy precipitation was the major factor that contributed to the slope failure.

Key words: Debris Landslide, Inclinometers, Deformation Monitoring, Transfer Coefficient Method