土木与环境工程学报（中英文）2025，Vol.47Issue(3)：113-125,13.DOI:10.11835/j.issn.2096-6717.2023.084
双线平行盾构隧道任意布置方式下施工引起的地表沉降预测模型
Prediction model of ground settlement caused by construction of double track parallel shield tunnels under arbitrary layout
摘要
Abstract
In order to investigate the surface settlement pattern caused by construction of a twin parallel shield tunnels in an arbitrary arrangement,a relevant theoretical prediction model needs to be established.Considering the effects of ground soil loss rate and convergence pattern,the classical two-dimensional Peck model is improved by introducing equivalent soil loss parameters to find the actual burial depth after tunnel convergence,taking circular tunnel as an example.Based on this,a prediction model for surface settlement due to construction of the twin parallel shield tunnels in any arrangement is established by considering three main influencing factors,including the angle α between the tunnel axis and the horizontal plane,the radius of the two-lane tunnel(r1,r2)and the tunnel axis distance D.The applicability of the proposed model is verified by the field monitoring and numerical simulation results from engineering practice,and predictive model for surface settlement due to construction of the twin parallel shield tunnels in any arrangement is established.The main influencing factors of surface settlement caused by construction under arbitrary arrangement of the twin parallel shield tunnels are analyzed.The results show that the prediction model could be used to solve the surface settlement problem caused by the construction of a two-line parallel shield tunnel in any arrangement,and it meets the engineering accuracy requirement of 20%.The critical parameter values[α,r2/r1,D/H']for the variation of the surface settlement curve from"V"to"W"are[60°,2.0,1.0],which can be used to make a preliminary judgment on the shape of the surface settlement curve and check the rationality of the surface settlement results.It provides reliable guidance for prediction and control of surface settlement deformation in similar tunnel construction.关键词
双线平行盾构隧道/布置方式/地表沉降/预测模型Key words
twin parallel shield tunnel/layout mode/surface settlement/prediction model分类
交通工程引用本文复制引用
王超,邹金锋..双线平行盾构隧道任意布置方式下施工引起的地表沉降预测模型[J].土木与环境工程学报（中英文）,2025,47(3):113-125,13.基金项目
国家重点研发计划(2017YFB1201200) （2017YFB1201200）
南昌轨道交通集团2020年度科研计划(2020HGKYB002) National Key Research and Development Program(No.2017YFB1201200) （2020HGKYB002）
Nanchang Rail Transit Group 2020 Annual Research Program(No.2020HGKYB002) （No.2020HGKYB002）
