[1]阮艳妹,徐文田,李牧羽.沿海复杂地层深基坑地下水控制引发的地表沉降规律分析[J].西安建筑科技大学学报(自然科学版),2023,55(05):712-719.[doi:10.15986/j.1006-7930.2023.05.010]
　RUAN Yanmei,XU Wentian,LI Muyu.Analysis of surface subsidence law caused by groundwater control of deep foundation pit in coastal complex strata[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2023,55(05):712-719.[doi:10.15986/j.1006-7930.2023.05.010]
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沿海复杂地层深基坑地下水控制引发的地表沉降规律分析()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
55
期数:
2023年05期
页码:
712-719
栏目:
出版日期:
2023-10-28

文章信息/Info

Title:
Analysis of surface subsidence law caused by groundwater control of deep foundation pit in coastal complex strata
文章编号:
1006-7930(2023)05-0712-08
作者:
阮艳妹; 徐文田; 李牧羽
（广州地铁设计研究院股份有限公司，广东 广州 510010）
Author(s):
RUAN Yanmei;  XU Wentian;  LI Muyu
（Guangzhou Metro Design & Research Institute Co.,Ltd., Guangzhou 510010, China）
关键词:
降水回灌试验; 地下水位; 地表沉降; 建筑物沉降; 回灌开启时间
Keywords:
precipitation recharge test;  water table;  surface subsidence;  building settlement;  recharge start time
分类号:
TU 463
DOI:
10.15986/j.1006-7930.2023.05.010
文献标志码:
A
摘要:
针对沿海深厚富水复杂地层开展了基坑降水回灌试验，分析了基坑降水回灌过程中地下水位、地表沉降和邻近建筑物沉降等基本规律.结果表明：深厚富水复杂地层降水会导致基坑周边地下水位迅速下降，同时将引起剧烈的地表沉降，当回灌量与抽水量逼近平衡时，地表沉降趋于稳定.基坑降水回灌过程中，地表沉降变化时程曲线会出现明显的转折点，回灌开始后地表沉降值仅有小幅度的抬升，但先期沉降基本无法恢复.回灌开启时间与地表最终沉降量呈现明显的相关性，但对地下稳定水位影响不显著，同抽同灌工艺对地表沉降控制的优势明显，好于先抽后灌及先灌后抽工艺.研究成果可以为类似工程的降水设计与环境控制提供数据支持.
Abstract:
The foundation pit dewatering and recharge test is carried out for the deep and complex waterrich strata in the coastal area, and the basic laws of groundwater level, surface subsidence and adjacent building subsidence during the foundation pit dewatering and recharge process are analyzed. The results show that the dewatering of deep waterrich complex strata will lead to the rapid decline of groundwater level around the foundation pit, and at the same time, it will cause severe surface subsidence. When the recharge and pumping amount approach the balance, the surface subsidence tends to be stable. In the process of dewatering and recharging of foundation pit, there will be an obvious turning point in the timehistory curve of surface settlement. After recharging, the surface settlement only rises slightly, but the early settlement can′t be recovered basically. The starting time of recharge is obviously related to the final settlement of the surface, but it has no significant effect on the stable groundwater level. The technology of simultaneous pumping and irrigation has obvious advantages in controlling the surface settlement, which is better than the first pumping and then irrigation or first irrigation and then pumping technology. The research results can provide data support for precipitation design and environmental control of similar projects.

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备注/Memo

备注/Memo:
收稿日期:2022-07-26修回日期:2023-08-16
基金项目:住房和城乡建设部研究开发项目（2022-K-044）
第一作者:阮艳妹（1981—），女，本科，高级工程师，主要从事轨道交通结构设计及研究工作. E-mail: 3040383070@qq.com
更新日期/Last Update: 2023-11-03