西安饱和软黄土高水位核心区基坑降水技术
  • 作者: 张亚龙,张玉峰,宋奇昱,等
论文摘要

西安饱和软黄土高水位核心区基坑降水技术*

张亚龙1,张玉峰1,宋奇昱2,张书敏2 

(1.中铁七局集团西安铁路工程有限公司,陕西 西安 7100322.西安建筑科技大学土木工程学院,陕西 西安 710055)

[摘要]饱和软黄土核心区高水位降水一直是工程亟待解决的关键问题之一。以西安地铁6号线施工为背景,结合理论分析、数值分析及现场监测深入探讨了降水方案、施工关键参数及关键施工工艺。研究表明:止水帷幕联合坑内降水工艺可作为饱和软黄土基坑降水的有效方案,工程中应密切关注附近水源补给对降水效果及沉降控制的影响。

[关键词]基坑;饱和软黄土;高水位;降水;数值模拟;监测

[中图分类号]TU753.66     [文献标识码]A     [文章编号]1002-8498(2021)04-0091-04

Dewatering Technology of Foundation Excavation in High Water Level Core Area of Saturated Soft Loess in Xian

ZHANG Yalong1, ZHANG Yufeng1, SONG Qiyu2, ZHANG Shumin2 

(1.Xian Railway Engineering Co., Ltd. of China Railway Seventh Group Co., Ltd., Xian, Shaanxi 710032, China; 2. College of Civil Engineering, Xian University of Architecture and Technology, Xian, Shaanxi 710055, China)

Abstract: The high water level precipitation in the core area of saturated soft loess is one of the key problems that need to be solved urgently but not solved well. Based on the construction of Xian Metro Line 6, combined with theoretical analysis, numerical analysis and on site monitoring, this paper discusses the dewatering scheme, key construction parameters and key construction technology. The results show that the water stop curtain combined with pit dewatering technology can be used as an effective scheme for foundation excavation dewatering in saturated soft loess, and the influence of nearby water supply on the dewatering effect and settlement control should be paid close attention to.  

Keywords:foundation excavation; saturated soft loess; high water level; dewatering; simulation; monitoring

*陕西省重点研发计划项目(2020SF-373

[作者简介]张亚龙,工程师,Email: 278716337@qq.com

 

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