|本期目录/Table of Contents|

[1]仲志武.软土地区地连墙与回灌井相互影响研究[J].建筑科学与工程学报,2021,38(06):98-107.[doi:10.19815/j.jace.2021.08050]
　ZHONG Zhi-wu.Research on Interaction Between Diaphragm Wall and Recharge Well in Soft Soil Area[J].Journal of Architecture and Civil Engineering,2021,38(06):98-107.[doi:10.19815/j.jace.2021.08050]
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软土地区地连墙与回灌井相互影响研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
38卷
期数:
2021年06期
页码:
98-107
栏目:
软土基坑设计与变形控制
出版日期:
2021-11-05

文章信息/Info

Title:
Research on Interaction Between Diaphragm Wall and Recharge Well in Soft Soil Area
文章编号:
1673-2049(2021)06-0098-10
作者:
仲志武
(中铁十八局集团有限公司,天津 300350)
Author(s):
ZHONG Zhi-wu
(China Railway 18th Bureau Group Co., Ltd., Tianjin 300350, China)
关键词:
地连墙;  基坑降水;  水位降深;  相互作用;  回灌井
Keywords:
diaphragm wall;  foundation pit dewatering;  water level drop;  interaction;  recharge well
分类号:
TU431
DOI:
10.19815/j.jace.2021.08050
文献标志码:
A
摘要:
针对地连墙缺口或缺陷问题,基于地铁车站基坑现场回灌试验,结合数值模拟,探究不同工况下地连墙与回灌井的相互影响作用。通过分析天津地铁6号线某车站基坑工程开挖前的抽灌试验,并采用有限差分法对不同地连墙缺口长度、不同回灌井距地连墙缺口距离工况下基坑外采取回灌控制水位下降的效果进行分析评价。结果表明:地连墙缺口长度对回灌效果影响较大,在缺口长度为5 m时,回灌引起的水位抬升效果相对完整墙降低可达50%左右; 基坑降水工程应保证地连墙质量,施工前开展抽灌试验,确保地连墙闭合; 在地连墙长度方向上,回灌井距离地连墙缺口或缺陷10 m以上时,缺口对回灌效果影响相对较小,在利用回灌控制坑外建筑物沉降时,应确保回灌井10 m范围内地连墙截水效果; 回灌井位于基坑外16 m以内时,因地连墙缺口引发的回灌效果差异显著; 距离超过24 m后,缺口对回灌的影响不明显; 实际工程中,回灌井应尽量远离基坑,靠近保护点的位置,避免受到地连墙渗漏影响。
Abstract:
Aiming at the gap or defect of diaphragm wall, based on the field recharge test of foundation pit of subway station, combined with numerical simulation, the interaction between diaphragm wall and recharge well under different working conditions were explored. Through the analysis of pumping and grouting test before foundation pit excavation of a station of Tianjin Metro Line 6, the finite difference method was used to analyze and evaluate the effect of recharge outside the foundation pit to control the decline of water level under the conditions of different length of diaphragm wall gap and different distance between recharge well and diaphragm wall gap. The results show that the gap length of diaphragm wall has a great impact on the effect of recharge. When the gap length is 5 m, the water level rise effect caused by recharge is reduced by about 50% compared with the complete wall. The foundation pit dewatering project shall ensure the quality of the diaphragm wall, and the pumping and grouting test shall be carried out before construction to ensure the closure of the diaphragm wall. In the length direction of the diaphragm wall, when the recharge well is more than 10 m away from the gap or defect of the diaphragm wall, the gap has relatively little impact on the recharge effect. When using recharge to control the settlement of buildings and structures outside the pit, the water interception effect of connecting wall within 10 m of recharge well shall be ensured. When the recharge well is located within 16 m outside the foundation pit, the recharge effect caused by the gap of the diaphragm wall is significantly different, and when the distance exceeds 24 m, the impact of gap on recharge is not obvious. In the actual project, the recharge well shall be as far away from the foundation pit as possible and close to the protection point to avoid being affected by the leakage of the diaphragm wall.

参考文献/References:

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ZHENG Gang,ZENG Chao-feng,XUE Xiu-li.Settlement Mechanism of Soils Induced by Local Pressure-relief of Confined Aquifer and Parameter Analysis[J].Chinese Journal of Geotechnical Engineering,2014,36(5):802-817.
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ZHENG Gang,CAO Jian-ran,CHENG Xue-song,et al.Experimental Study on Artificial Recharge of Second Tianjin Silt and Silty Sand Micro-confined Aquifer[J].Chinese Journal of Geotechnical Engineering,2018,40(4):592-601.
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[19]冯晓腊,熊文林,胡 涛,等.三维水-土耦合模型在深基坑降水计算中的应用[J].岩石力学与工程学报,2005,24(7):1196-1201.
FENG Xiao-la,XIONG Wen-lin,HU Tao,et al.Application of 3D Coupling Model of Seepage and Stress for Simulating Deep Foundation Pits Dewatering[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(7):1196-1201.
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[21]GAMBOLATI G,TEATINI P.Geomechanics of Subsurface Water Withdrawal and Injection[J].Water Resources Research,2015,51(6):3922-3955.
[22]李欣哲.浅谈土建工程中基础遇地下水的研究处理[J].地下水,2020,42(6):31-34.
LI Xin-zhe.Research and Treatment of Foundation Encountering Ground Water in Civil Engineering[J].Ground Water,2020,42(6):31-34.
[23]马玉飞,胡文奎,付 垚,等.城市复杂环境深基坑工程支护设计[J].城市勘测,2020(5):188-191.
MA Yu-fei,HU Wen-kui,FU Yao,et al.Design of Foundation Pit Support in Urban Complex Environment[J].Urban Geotechnical Investigation & Surveying,2020(5):188-191.
[24]刘 鹏.工程中的超深基坑降水与降水井封堵施工技术[J].北方建筑,2020,5(5):57-60.
LIU Peng.Construction Technology of Super Deep Foundation Pit Dewatering and Plugging of Dewatering Well[J].Northern Architecture,2020,5(5):57-60.
[25]金小荣,俞建霖,祝哨晨,等.基坑降水引起周围土体沉降性状分析[J].岩土力学,2005,26(10):1575-1581.
JIN Xiao-rong,YU Jian-lin,ZHU Shao-chen,et al.Analysis of Behaviors of Settlement of Pit's Surrounding Soils by Dewatering[J].Rock and Soil Mechanics,2005,26(10):1575-1581.
[1] 丁洲祥,龚晓南,俞建霖,等.止水帷幕对基坑环境效应影响的有限元分析[J].岩土力学,2005,26(增1):146-150.
DING Zhou-xiang,GONG Xiao-nan,YU Jian-lin,et al.Finite Element Analysis of Environmental Effects of Waterproof Wall on Excavation[J].Rock and Soil Mechanics,2005,26(S1):146-150.
[2]施成华,彭立敏.基坑开挖及降水引起的地表沉降预测[J].土木工程学报,2006,39(5):117-121.
SHI Cheng-hua,PENG Li-min.Ground Surface Settlement Caused by Foundation Pit Excavation and Dewatering[J].China Civil Engineering Journal,2006,39(5):117-121.
[3]黄显贵,陈 梁,刘御刚,等.基坑降水引起的地基附加应力及沉降简化计算[J].地下空间与工程学报,2017,13(3):746-752.
HUANG Xian-gui,CHEN Liang,LIU Yu-gang,et al.Simplified Calculation of Ground Settlement and Additional Stress Caused by Excavation Pit Dewatering[J].Chinese Journal of Underground Space and Engineering,2017,13(3):746-752.
[4]孙文娟,沈水龙,李耀良,等.基坑开挖前降水引起的地面沉降的工程实例分析[J].岩土工程学报,2008,30(增1):314-318.
SUN Wen-juan,SHEN Shui-long,LI Yao-liang,et al.Case Study on Settlement Around an Unexcavated Excavation Pit Due to Groundwater Pumping[J].Chinese Journal of Geotechnical Engineering,2008,30(S1):314-318.
[5]田志强,陈 锐,王子哲,等.深基坑开挖及降水引起的邻近浅基础沉降分析[J].地下空间与工程学报,2012,8(增1):1483-1490.
TIAN Zhi-qiang,CHEN Rui,WANG Zi-zhe,et al.Settlement of Shallow Foundation Induced by Adjacent Deep Excavation and Dewatering[J].Chinese Journal of Underground Space and Engineering,2012,8(S1):1483-1490.
[6]哈 达,朱敢平,李 竹,等.天津市承压含水层条件下地连续墙深度优化[J].地下空间与工程学报,2018,14(2):490-499.
HA Da,ZHU Gan-ping,LI Zhu,et al.Underground Diaphragm Wall Depth Optimization Considering the Confined Aquifer in Tianjin.[J].Chinese Journal of Underground Space and Engineering,2018,14(2):490-499.
[7]张雪婵,张 杰,龚晓南,等.典型城市承压含水层区域性特性[J].浙江大学学报:工学版,2010,44(10):1998-2004.
ZHANG Xue-chan,ZHANG Jie,GONG Xiao-nan,et al.Regional Property of Confined Aquifer in Typical Cities[J].Journal of Zhejiang University:Engineering Science,2010,44(10):1998-2004.
[8]武永霞,张 楠,陆建生.地下水回灌技术在浅层承压含水层中的实践与探讨[J].岩土工程技术,2010,24(3):156-160.
WU Yong-xia,ZHANG Nan,LU Jian-sheng.Practice and Research of Groundwater Recharge in Shallow Confined Aquifer[J].Geotechnical Engineering Technique,2010,24(3):156-160.
[9]何国峰,张 云,孙 铁,等.周期性开采和回灌条件下浅层地下水位变化特征研究——以天津滨海新区为例[J].水文地质工程地质,2016,43(6):27-34.
HE Guo-feng,ZHANG Yun,SUN Tie,et al.Variation Characteristics of Shallow Groundwater Levels Under Periodic Pumping and Recharge Test:Examplified by Tianjin Binhai New Area[J].Hydrogeology & Engineering Geology,2016,43(6):27-34.
[10]陆建生,潘伟强.上海某枢纽基坑工程浅层承压水回灌试验分析[J].地下空间与工程学报,2014,10(4):810-817,828.
LU Jian-sheng,PAN Wei-qiang.Test and Analysis of Artificial Recharge to the Shallow Confined Aquifer of Deep Excavation Pit in Shanghai[J].Chinese Journal of Underground Space and Engineering,2014,10(4):810-817,828.
[11]俞建霖,龚晓南.基坑工程地下水回灌系统的设计与应用技术研究[J].建筑结构学报,2001,22(5):70-74.
YU Jian-lin,GONG Xiao-nan.Study on the Design and the Application of the Groundwater Recharge System in Excavation[J].Journal of Building Structures,2001,22(5):70-74.
[12]毛根海,宋建锋,姚懿伦,等.回灌技术在基坑工程中的应用研究[J].浙江大学学报:工学版,2005,39(1):165-168.
MAO Gen-hai,SONG Jian-feng,YAO Yi-lun,et al.Research on Application of Recharging Technique in Excavation Engineering[J].Journal of Zhejiang University:Engineering Science,2005,39(1):165-168.
[13]曾超峰,薛秀丽,罗 鹏.基坑工程地下水回灌对土层变形的影响[J].工程建设,2017,49(11):1-5.
ZENG Chao-feng,XUE Xiu-li,LUO Peng.Influence of Artificial Recharge on Ground Deformation in Excavation Engineering[J].Engineering Construction,2017,49(11):1-5.
[14]郑 刚,曾超峰,薛秀丽.承压含水层局部降压引起土体沉降机理及参数分析[J].岩土工程学报,2014,36(5):802-817.
ZHENG Gang,ZENG Chao-feng,XUE Xiu-li.Settlement Mechanism of Soils Induced by Local Pressure-relief of Confined Aquifer and Parameter Analysis[J].Chinese Journal of Geotechnical Engineering,2014,36(5):802-817.
[15]郑 刚,曹剑然,程雪松,等.天津第二粉土粉砂微承压含水层回灌试验研究[J].岩土工程学报,2018,40(4):592-601.
ZHENG Gang,CAO Jian-ran,CHENG Xue-song,et al.Experimental Study on Artificial Recharge of Second Tianjin Silt and Silty Sand Micro-confined Aquifer[J].Chinese Journal of Geotechnical Engineering,2018,40(4):592-601.
[16]曾超峰.工程降水引起基坑及土体变形机理、规律及控制策略研究[D].天津:天津大学,2014.
ZENG Chao-feng.Study on Deformation Mechanism,Behavior and Control Strategy of Excavation and Ground Under Dewatering[D].Tianjin:Tianjin University,2014.
[17]卢士涛,许涛涛,李亮亮,等.承压砂层深基坑降水和回灌试验的应用研究[J].地下空间与工程学报,2017,13(增2):658-662.
LU Shi-tao,XU Tao-tao,LI Liang-liang,et al.Applied Study on Pumping and Recharge Tests of Deep Foundation Excavation in Bearing Sand Layer Area[J].Chinese Journal of Underground Space and Engineering,2017,13(S2):658-662.
[18]卢智强,冯晓腊,王超峰.悬挂式止水帷幕对基坑降水的影响[J].隧道建设,2006,26(5):5-7,20.
LU Zhi-qiang,FENG Xiao-la,WANG Chao-feng.Effects of Pensile Curtains on Dewatering of Foundation Pits[J].Tunnel Construction,2006,26(5):5-7,20.
[19]冯晓腊,熊文林,胡 涛,等.三维水-土耦合模型在深基坑降水计算中的应用[J].岩石力学与工程学报,2005,24(7):1196-1201.
FENG Xiao-la,XIONG Wen-lin,HU Tao,et al.Application of 3D Coupling Model of Seepage and Stress for Simulating Deep Foundation Pits Dewatering[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(7):1196-1201.
[20]ZHANG Y Q,WANG J H,CHEN J J,et al.Numerical Study on the Responses of Groundwater and Strata to Pumping and Recharge in a Deep Confined Aquifer[J].Journal of Hydrology,2017,548:342-352.
[21]GAMBOLATI G,TEATINI P.Geomechanics of Subsurface Water Withdrawal and Injection[J].Water Resources Research,2015,51(6):3922-3955.
[22]李欣哲.浅谈土建工程中基础遇地下水的研究处理[J].地下水,2020,42(6):31-34.
LI Xin-zhe.Research and Treatment of Foundation Encountering Ground Water in Civil Engineering[J].Ground Water,2020,42(6):31-34.
[23]马玉飞,胡文奎,付 垚,等.城市复杂环境深基坑工程支护设计[J].城市勘测,2020(5):188-191.
MA Yu-fei,HU Wen-kui,FU Yao,et al.Design of Foundation Pit Support in Urban Complex Environment[J].Urban Geotechnical Investigation & Surveying,2020(5):188-191.
[24]刘 鹏.工程中的超深基坑降水与降水井封堵施工技术[J].北方建筑,2020,5(5):57-60.
LIU Peng.Construction Technology of Super Deep Foundation Pit Dewatering and Plugging of Dewatering Well[J].Northern Architecture,2020,5(5):57-60.
[25]金小荣,俞建霖,祝哨晨,等.基坑降水引起周围土体沉降性状分析[J].岩土力学,2005,26(10):1575-1581.
JIN Xiao-rong,YU Jian-lin,ZHU Shao-chen,et al.Analysis of Behaviors of Settlement of Pit's Surrounding Soils by Dewatering[J].Rock and Soil Mechanics,2005,26(10):1575-1581.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2021-08-21
基金项目:中国铁建股份有限公司科技研究开发计划项目(2020-C64)
作者简介:仲志武(1971-),男,青海贵德人,高级工程师,E-mail:1258812224@qq.com。
更新日期/Last Update: 2021-11-01