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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:

138-146

栏目:

软土隧道施工与变形控制

出版日期:

2021-11-05

文章信息/Info

Title:

Numerical Simulation on Horizontal Deformation Control of Tunnel by Grouting

文章编号:

1673-2049(2021)06-0138-09

作者:

董敏忠

(中铁十八局集团第四工程有限公司,天津 300200)

Author(s):

DONG Min-zhong

(The Fourth Engineering Co., Ltd. of China Railway 18th Bureau Group, Tianjin 300200, China)

关键词:

铁路隧道;  变形控制;  数值模拟;  注浆

Keywords:

railway tunnel;  deformation control;  numerical simulation;  grouting

分类号:

TU311.2

DOI:

10.19815/j.jace.2021.08053

文献标志码:

A

摘要:

为研究影响注浆效果的影响因素,以天津市某基坑工程为背景,在既有隧道与基坑之间的场地开展原位注浆试验,同时利用大型有限元模拟软件PLAXIS模拟注浆过程,研究了注浆距离、注浆量、注浆深度、基坑开挖以及多孔同时注浆对注浆效果的影响。另外,对比分析了基坑周边有隧道和基坑周边无隧道2种情况下隧道与土体的变形规律。结果表明:采用注浆法控制隧道变形时,协调选择注浆量与注浆距离才能达到较高的注浆效率,注浆量应根据基坑开挖情况及隧道位移情况及时调整,同时后续需要在相同或相近位置进行重复注浆补偿隧道位移恢复值,才能使隧道变形得到整体控制; 当注浆范围顶部埋深与隧道轴线埋深相同时,隧道的水平位移恢复值最大,为注浆深度的确定提供了参考; 基坑开挖后注浆纠偏隧道位移的效果相较于无基坑情况时出现一定程度的削弱,并且注浆量越大,注浆效果削弱越明显; 根据注浆影响范围布置注浆孔,充分利用多孔注浆的叠加效应能够使隧道变形得到均匀控制。

Abstract:

In order to study the influencing factors affecting the grouting effect, based on a foundation pit project in Tianjin, an in-situ grouting test was carried out in the site between the existing tunnel and the foundation pit. At the same time, the large-scale finite element simulation software PLAXIS was used to simulate the grouting process, and the effects of grouting distance, grouting amount, grouting depth, foundation pit excavation and porous grouting on the grouting effect were studied. In addition, the deformation laws of tunnel and soil were compared and analyzed when there was a tunnel around the foundation pit and no tunnel around the foundation pit. The results show that when grouting method is used to control tunnel deformation, high grouting efficiency can be achieved by coordinating the selection of grouting amount and grouting distance. The grouting amount shall be adjusted in time according to the foundation pit excavation and tunnel displacement. At the same time, repeated grouting shall be carried out at the same or similar positions to compensate the tunnel displacement recovery value, so as to control the overall tunnel deformation. When the top buried depth of the grouting range is the same as that of the tunnel axis, the horizontal displacement recovery value of the tunnel is the largest, which provides a reference for the determination of the grouting depth. The effect of grouting correction of tunnel displacement after foundation pit excavation is weakened to a certain extent compared with that without foundation pit, and the greater the amount of grouting, the more obvious the weakening of grouting effect is. The tunnel deformation can be controlled uniformly by arranging grouting holes according to the influence range of grouting and making full use of the superposition effect of porous grouting.

参考文献/References:

[1] 魏久传,韩承豪,张伟杰,等.基于步进式算法的裂隙注浆扩散机制研究[J].岩土力学,2019,40(3):913-925.
WEI Jiu-chuan,HAN Cheng-hao,ZHANG Wei-jie,et al.Mechanism of Fissure Grouting Based on Step-wise Calculation Method[J].Rock and Soil Mechanics,2019,40(3):913-925.
[2]李术才,郑 卓,刘人太,等.考虑浆-岩耦合效应的微裂隙注浆扩散机制分析[J].岩石力学与工程学报,2017,36(4):812-820.
LI Shu-cai,ZHENG Zhuo,LIU Ren-tai,et al.Analysis on Fracture Grouting Mechanism Considering Grout-rock Coupling Effect[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(4):812-820.
[3]李术才,冯 啸,刘人太,等.考虑渗滤效应的砂土介质注浆扩散规律研究[J].岩土力学,2017,38(4):925-933.
LI Shu-cai,FENG Xiao,LIU Ren-tai,et al.Diffusion of Grouting Cement in Sandy Soil Considering Filtration Effect[J].Rock and Soil Mechanics,2017,38(4):925-933.
[4]王晓晨,刘人太,杨为民,等.考虑水泥浆液析水作用的水平裂隙注浆扩散机制研究[J].岩石力学与工程学报,2019,38(5):1005-1017.
WANG Xiao-chen,LIU Ren-tai,YANG Wei-min,et al.Study on Grouting Mechanism of Horizontal Fractures Considering the Bleeding of Cement Slurry[J].Chinese Journal of Rock Mechanics and Engineering,2019,38(5):1005-1017.
[5]ZHANG Q S,ZHANG L Z,LIU R T,et al.Grouting Mechanism of Quick Setting Slurry in Rock Fissure with Consideration of Viscosity Variation with Space[J].Tunnelling and Underground Space Technology,2017,70:262-273.
[6]MU W Q,LI L C,YANG T H,et al.Numerical Investigation on a Grouting Mechanism with Slurry-rock Coupling and Shear Displacement in a Single Rough Fracture[J].Bulletin of Engineering Geology and the Environment,2019,78(8):6159-6177.
[7]杨志全,侯克鹏,郭婷婷,等.基于考虑时变性的宾汉姆流体的渗透注浆机理研究[J].四川大学学报:工程科学版,2011,43(增1):67-72.
YANG Zhi-quan,HOU Ke-peng,GUO Ting-ting,et al.Study on Penetration Grouting Mechanism Based on Bingham Fluid of Time-dependent Behavior[J].Journal of Sichuan University:Engineering Science Edition,2011,43(S1):67-72.
[8]孙 锋,张顶立,陈铁林.基于流体时变性的隧道劈裂注浆机理研究[J].岩土工程学报,2011,33(1):88-93.
SUN Feng,ZHANG Ding-li,CHEN Tie-lin.Fracture Grouting Mechanism in Tunnels Based on Time-dependent Behaviors of Grout[J].Chinese Journal of Geotechnical Engineering,2011,33(1):88-93.
[9]朱光轩,张庆松,刘人太,等.基于渗滤效应的沙层劈裂注浆扩散规律分析及其ALE算法[J].岩石力学与工程学报,2017,36(增2):4167-4176.
ZHU Guang-xuan,ZHANG Qing-song,LIU Ren-tai,et al.Analysis of Fracturing Grouting Diffusion in Sand Considering Filtration Effects and Its ALE Algorithm[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(S2):4167-4176.
[10]张连震,李志鹏,张庆松,等.基于土体非线性压密效应的劈裂注浆机制分析[J].岩石力学与工程学报,2016,35(7):1483-1493.
ZHANG Lian-zhen,LI Zhi-peng,ZHANG Qing-song,et al.Split Grouting Mechanism Based on Nonlinear Characteristics of Compression Process of Soil[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(7):1483-1493.
[11]张庆松,王洪波,刘人太,等.考虑浆液扩散路径的多孔介质渗透注浆机理研究[J].岩土工程学报,2018,40(5):918-924.
ZHANG Qing-song,WANG Hong-bo,LIU Ren-tai,et al.Infiltration Grouting Mechanism of Porous Media Considering Diffusion Paths of Grout[J].Chinese Journal of Geotechnical Engineering,2018,40(5):918-924.
[12]沙 飞,李术才,林春金,等.砂土介质注浆渗透扩散试验与加固机制研究[J].岩土力学,2019,40(11):4259-4269.
SHA Fei,LI Shu-cai,LIN Chun-jin,et al.Research on Penetration Grouting Diffusion Experiment and Reinforcement Mechanism for Sandy Soil Porous Media[J].Rock and Soil Mechanics,2019,40(11):4259-4269.
[13]程少振,陈铁林,郭玮卿,等.土体劈裂注浆过程的数值模拟及浆脉形态影响因素分析[J].岩土工程学报,2019,41(3):484-491.
CHENG Shao-zhen,CHEN Tie-lin,GUO Wei-qing,et al.Numerical Simulation of Fracture Grouting and Influencing Factors for Morphology of Grout Veins[J].Chinese Journal of Geotechnical Engineering,2019,41(3):484-491.
[14]张连震,李志鹏,刘人太,等.砂层劈裂-压密注浆模拟试验系统研发及试验[J].岩土工程学报,2019,41(4):665-674.
ZHANG Lian-zhen,LI Zhi-peng,LIU Ren-tai,et al.Simulation Tests on Fracture-compaction Grouting Process in Sand Layer[J].Chinese Journal of Geotechnical Engineering,2019,41(4):665-674.
[15]LIU Q S,SUN L.Simulation of Coupled Hydro-mechanical Interactions During Grouting Process in Fractured Media Based on the Combined Finite-discrete Element Method[J].Tunnelling and Underground Space Technology,2019,84:472-486.
[16]XIAO F,SHANG J L,ZHAO Z Y.DDA Based Grouting Prediction and Linkage Between Fracture Aperture Distribution and Grouting Characteristics[J].Computers and Geotechnics,2019,112:350-369.
[17]ZHU Y S,WANG X L,DENG S H,et al.Grouting Process Simulation Based on 3D Fracture Network Considering Fluid-structure Interaction[J].Applied Sciences,2019,9(4):665.
[18]郑 刚,潘 军,程雪松,等.基坑开挖引起隧道水平变形的被动与注浆主动控制研究[J].岩土工程学报,2019,41(7):1181-1190.
ZHENG Gang,PAN Jun,CHENG Xue-song,et al.Passive Control and Active Grouting Control of Horizontal Deformation of Tunnels Induced Neighboring Excavation[J].Chinese Journal of Geotechnical Engineering,2019,41(7):1181-1190.
[19]张 浩,施成华,彭立敏,等.模袋袖阀管压密注浆的注浆压力理论计算方法研究[J].岩土力学,2020,41(4):1313-1322.
ZHANG Hao,SHI Cheng-hua,PENG Li-min,et al.Study on Theoretical Calculation Method of Grouting Pressure for Compaction Grouting of Mold Bag Sleeve Valve Tube[J].Rock and Soil Mechanics,2020,41(4):1313-1322.
[20]张冬梅,邹伟彪,闫静雅.软土盾构隧道横向大变形侧向注浆控制机理研究[J].岩土工程学报,2014,36(12):2203-2212.
ZHANG Dong-mei,ZOU Wei-biao,YAN Jing-ya.Effective Control of Large Transverse Deformation of Shield Tunnels Using Grouting in Soft Deposits[J].Chinese Journal of Geotechnical Engineering,2014,36(12):2203-2212.
[21]侯艳娟,张顶立,陈峰宾.隧道施工下穿建筑物注浆抬升机制及预测研究[J].岩石力学与工程学报,2011,30(12):2407-2415.
HOU Yan-juan,ZHANG Ding-li,CHEN Feng-bin.Study of Mechanism and Prediction of Grouting Uplift in Tunnel Construction Undercrossing Buildings[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(12):2407-2415.
[22]WU K,CUI S S,LI Y P,et al.Study on the Mechanism of Grouting Under Different Tunnel Depth of Cross Passage[J].Geotechnical and Geological Engineering,2020,38:3291-3305.
[23]ZHANG D M,LIU Z S,WANG R L,et al.Influence of Grouting on Rehabilitation of an Over-deformed Operating Shield Tunnel Lining in Soft Clay[J].Acta Geotechnica,2019,14:1227-1247.
[24]ZHOU S H,XIAO J H,DI H G,et al.Differential Settlement Remediation for New Shield Metro Tunnel in Soft Soils Using Corrective Grouting Method:Case Study[J].Canadian Geotechnical Journal,2018,55(12):1877-1887.
[25]LEE K M,GE X W.The Equivalence of a Jointed Shield-driven Tunnel Lining to a Continuous Ring Structure[J].Canadian Geotechnical Journal,2011,38(3):461-483.
[26]MAIR R J,TAYLOR R N.Bored Tunnelling in the Urban Environment[C]//HUMID S.Proceedings of the Fourteenth International Conference on Soil Mechanics and Foundation Engineering.New York:ASCE,1999:2353-2385.

相似文献/References:

[1]李煜峰,傅 怡,徐中华.软土地区紧邻地铁隧道深基坑支护设计与实践[J].建筑科学与工程学报,2021,38(06):128.[doi:10.19815/j.jace.2021.08052]
　LI Yu-feng,FU Yi,XU Zhong-hua.Supporting Design and Application of Deep Excavation Adjacent to Metro Tunnels in Soft Soil Area[J].Journal of Architecture and Civil Engineering,2021,38(06):128.[doi:10.19815/j.jace.2021.08052]

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-C63)
作者简介:董敏忠(1982-),男,四川资阳人,高级工程师,E-mail:4083093@qq.com。

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更新日期/Last Update: 2021-11-01