[1]杨潇.多基坑深层承压水降水引起地表沉降规律研究[J].西安建筑科技大学学报:自然科学版,2015,47(01):66-70.[doi:10.15986/j.1006-7930.2015.01.013]
　YANG Xiao,Study on the law of formations settlement induced by dewatering in deep confined aquifer in multiple excavations[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(01):66-70.[doi:10.15986/j.1006-7930.2015.01.013]
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多基坑深层承压水降水引起地表沉降规律研究()
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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:
47
期数:
2015年01期
页码:
66-70
栏目:
出版日期:
2015-02-28

文章信息/Info

Title:
Study on the law of formations settlement induced by dewatering in deep confined aquifer in multiple excavations
文章编号:
1006-7930(2015)01-0066-05
作者:
杨潇;
同济大学地下建筑与工程系;岩土及地下工程教育部重点实验室;
Author(s):
YANG Xiao1;  2
1.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;2. Key Laboratory of Geotechnical Engineering of Education Ministry, Shanghai 200092, China
关键词:
多基坑; 深层承压水降水; 地层沉降; 承压含水层厚度; 基坑间距
Keywords:
multiple excavations;  dewatering in deep confined aquifer;  formations settlement;  thickness of confined layer;  distance of excavations
分类号:
TU46+3
DOI:
10.15986/j.1006-7930.2015.01.013
文献标志码:
A
摘要:
基于上海某地铁换乘枢纽工程,借助Geo Studio2007数值分析软件,针对上海地区第二层承压水降水及其引起地层沉降进行数值模拟.考虑了两种多基坑排布形式,两个独立基坑和坑中坑;设置了两个控制变量,承压含水层厚度M和基坑间距D.研究表明,对于两个独立基坑,在降压井影响区域内,地表沉降量随着承压含水层厚度的增加而先增加后减小,在影响区域外,地表沉降量随着承压含水层厚度的增加而增加;随着基坑间距的增大,目标基坑和相邻基坑内部的地表沉降均减小.对于坑中坑,在降压井影响区域内,地表沉降量随着承压含水层厚度的增加而减小,在影响区域外,地表沉降量随着承压含水层厚度的增加而增大;随着外侧地下连续墙与深坑距...
Abstract:
A numerical simulation is carried out on dewatering in the second confined aquifer and the formations subsidence based on the underground complex engineering of a Shanghai metro junction hub. By utilizing the element numerical software GeoStudio2007, two array modes of multiple excavations are considered, with two control parameters, thickness of confined layer and distance of excavations. It shows that in the case of two independent pits, as the thickness of confined aquifer turns larger, the surface settlement increases first and declines later within the affected area of dewatering well, but raises monotonically outside the area. With the distance of excavations extending, the settlement declines both in the target pit and neighboring pit. As to the case of pit small in pit larger, the surface settlement shows a decrease and increase respectively within and without the affected area of
dewatering well. Furthermore, there exists a feature of raise and down for the settlement in the center pit with a prolongation of the distance between the outside diagram wall and the center pit. The achievements of this paper will provide certain aids and references for engineering problems in soft areas as dewatering in deep confined water in multiple excavations.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2014-08-11 修改稿日期：2015-01-31
基金项目：国家重点基础研究发展计划项目(973 计划) (2011CB013800)
作者简介：杨潇(1990-)，男，博士生，主要从事隧道及地下工程等领域研究工作．E-mail：tongji1410256@126.com
更新日期/Last Update: 1900-01-01