土工基础

›› 2016, Vol. 30 ›› Issue (4): 416-418.

• 工程实录 • 上一篇    下一篇

岩溶地区人工挖孔桩塌孔事故处理技术

陈 飞1，龚 平2   

  1. （1.江西理工大学江西省矿业工程重点实验室，江西赣州 341000； 2.赣南地质调查大队，江西赣州 341000）
  • 收稿日期:2015-07-06 出版日期:2016-08-20 发布日期:2016-08-26
  • 作者简介:陈 飞（1969-），男，副教授，研究方向为地质工程、岩土工程。

Mitigation of Collapse of Manually Excavated Caissons in Karst Terrain

CHEN Fei1, GONG Ping2   

  1. (1.Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000;
    2.Gannan Division of Geological Survey, Ganzhou 330002)
  • Received:2015-07-06 Online:2016-08-20 Published:2016-08-26

摘要： 结合岩溶地质条件下桩基工程实践，介绍了特殊椭圆形桩体人工挖孔桩塌孔事故经过，并对事故原因进行了分析，通过优化选择处理方案，采用注浆、优化护壁结构参数等技术措施处理塌孔事故孔，取得了良好的效果，对岩溶地区人工挖孔桩的塌孔事故处理有一定的推广价值。

关键词: 岩溶, 人工挖孔桩, 塌孔, 注浆, 护壁

Abstract: This paper presents the mitigation of the collapse in the manually excavated noncircular oblong caisson in karst terrain. The causes of the collapse were investigated throughout the site specific conditions, the collapsed caissons were treated with grouting and optimize the protective layer of the excavated caisson.

Key words: Karst Terrain, Manually Excavated Caisson, Caisson Collapse, Grouting, Protective Layer