盾构隧道施工对大堤的表面沉降特性分析  

ANALYSIS OF SURFACE SETTLEMENT CHARACTERISTICS OF EMBANKMENTS INDUCED BY SHIELD TUNNEL CONSTRUCTION

作　　者：YASIN FAYSAL ABDULAHI 王立峰 YASIN FAYSAL ABDULAHI;WANG Lifeng(College of Civil Engineering and Architecture,Zhejiang University of Science and Technology,Hangzhou 310023,China)

机构地区：[1]浙江科技大学土木与建筑工程学院,杭州310023

出　　处：《低温建筑技术》2025年第3期143-146,共4页Low Temperature Architecture Technology

摘　　要：文中依托艮山东路过江隧道工地的大江东明挖段,分析盾构隧道穿越堤坝时的地表沉降情况。通过实地监测方法,详细记录了盾构隧道在通过堤坝前、通过阶段以及通过后阶段的地表沉降数据。结果显示在盾构通过阶段和通过后阶段,两个监测点的沉降值分别占总沉降值的43.6%和28.36%,这两个阶段的沉降合计约占总沉降值的72%。盾构隧道施工对堤坝沉降的影响范围达到2.75倍隧道直径(D),约40.875 m(以隧道直径14.5 m计算)。这表明盾构施工对周围环境,尤其是堤坝稳定性有深远影响。综上所述,研究得出结论,盾构隧道施工过程中,通过阶段和通过后阶段是沉降变化最显著的关键时期,对堤坝稳定性构成显著影响。研究为类似工程中盾构隧道施工对堤坝稳定性的影响分析提供了理论参考。Based on the open-cut section of the Jiangdong segment of the Genshan East Road River-Crossing Tunnel project,we investigate surface settlement induced by shield tunneling through an embankment.Field monitoring methods are employed to record surface settlement data before,during,and after the shield tunnel passed through the embankment.The results indicate that during the tunneling and post-tunneling phases,the settlement values at two monitoring points accounted for 43.6%and 28.36%of the total settlement,respectively.These two stages combined contributed approximately 72%of the total settlement.The influence range of shield tunneling on embankment settlement extended up to 2.75 times the tunnel diameter(D),equivalent to approximately 40.875 m for a tunnel diameter of 14.5 m.This finding highlights the profound impact of shield tunneling on the surrounding environment,particularly embankment stability.The tunneling and post-tunneling phases are the most critical periods for settlement variation,posing significant stability concerns for the embankment,providing theoretical references for assessing the impact of shield tunneling on embankment stability in similar engineering projects.

关 键 词：盾构隧道 地表沉降 堤坝沉降 地表沉降曲线 

分 类 号：TU478[建筑科学—结构工程]