土工基础

›› 2015, Vol. 29 ›› Issue (3): 53-57.

• 工程实录 • 上一篇    下一篇

岩溶地区深厚砂层中深基坑止水工艺实践

林华国1，袁作春2，冯龙飞1，张永生1   

  1. (1.广东省工程勘察院，广州 510510；2.广州市设计院，广州 510620)
  • 收稿日期:2014-12-09 出版日期:2015-06-20 发布日期:2015-06-26
  • 作者简介:林华国（1978-），男，工程师，主要研究方向为岩土工程设计。

Sealing Practice of Deep Excavations in Fine Sand Soil Strata above Karstic Rocks

LIN Huaguo1,YUAN  Zuochun2,FENG Longfei1,ZHANG Yongsheng1   

  1. (1.Guangdong Engineering Investigation Institute, Guangzhou 510510
    2.Guangzhou Design Institute, Guangzhou 510620)
  • Received:2014-12-09 Online:2015-06-20 Published:2015-06-26

摘要： 结合典型工程实例，介绍了岩溶发育地区强透水层中的深基坑支护选型、止水设计具体过程，指出在动水作用下，通过改进止水帷幕设计和坑底加固措施，可有效提高止水桩的成桩质量和止水效果，从而确保了基坑的安全，对类似工程具有借鉴作用。

关键词: 岩溶, 深厚砂层, 基坑支护, 动水作用, 止水措施

Abstract: This paper presents a case study for selecting type of braced excavation and water cutoff technique in high permeable soil in karst area. This specific project suggests that the quality and effectiveness of a seepage cutoff wall and the safety of the excavation can be improved at the design phase by improving cutoff wall design and increasing stability at bottom of the excavation.   

Key words: Karst Area, Sand, Braced Excavation, Seepage, Cutoff