Analysis of Influence of Shield Tunnel Parallel Construction on River Levee Stability under Fluctuating Water Levels

DOU Xiaotian; DONG Jun; LIU Weizheng; SHI Jiawen; TAN Jiming

doi:10.13409/j.cnki.jdpme.20240607001

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Analysis of Influence of Shield Tunnel Parallel Construction on River Levee Stability under Fluctuating Water Levels

更新时间：2026-04-15

- Analysis of Influence of Shield Tunnel Parallel Construction on River Levee Stability under Fluctuating Water Levels
- Journal of Disaster Prevention and Mitigation Engineering Vol. 46, Issue 2, Pages: 419-429(2026)
- 作者机构：
  
  1.中铁隧道集团二处有限公司，河北三河 065201
  2.中南大学土木工程学院，湖南长沙 410075
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.20240607001
  CLC： U455.43
- Received：07 June 2024，
  
  Revised：2024-07-19，
  
  Published：28 April 2026
- 稿件说明：
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豆小天,董军,刘维正等.水位变化下盾构并行施工对大堤稳定性影响分析[J].防灾减灾工程学报,2026,46(02):419-429.

DOU Xiaotian,DONG Jun,LIU Weizheng,et al.Analysis of Influence of Shield Tunnel Parallel Construction on River Levee Stability under Fluctuating Water Levels[J].Journal of Disaster Prevention and Mitigation Engineering,2026,46(02):419-429.
豆小天,董军,刘维正等.水位变化下盾构并行施工对大堤稳定性影响分析[J].防灾减灾工程学报,2026,46(02):419-429. DOI： 10.13409/j.cnki.jdpme.20240607001.

DOU Xiaotian,DONG Jun,LIU Weizheng,et al.Analysis of Influence of Shield Tunnel Parallel Construction on River Levee Stability under Fluctuating Water Levels[J].Journal of Disaster Prevention and Mitigation Engineering,2026,46(02):419-429. DOI： 10.13409/j.cnki.jdpme.20240607001.

摘要

为研究沿江地区水位变化下管廊盾构施工产生的地层扰动对既有大堤安全性的影响，以安庆市沿江东路堤下段盾构并行安庆长江大堤为背景，首先对实测数据进行分析，得到大堤变形的基本规律；再建立盾构并行既有大堤三维流固耦合数值模型，研究盾构与大堤间距

、水位

对大堤两侧稳定性、不同部位（堤顶、堤底）变形以及地表水平位移的影响规律。结果表明，数值模拟中大堤不同部位沉降与现场实测所呈现规律相同；数值模拟显示

、

均对大堤渗透稳定性有较大影响，背水堤坡抗滑稳定性受

影响较大而迎水堤坡受

影响较大；在36 m间距条件下，水力梯度

随

呈线性变化，变化幅度为0.21/m，盾构穿越后

增大6.1%，迎水堤坡安全系数

增大而背水堤坡减小，且水位越高

减小的幅度越大；在间距24 m和12 m条件下，盾构穿越后

增大12.8%、17.9%，

大于17 m时背水堤坡不满足抗滑要求；控制

于24~36 m，可以满足不同水位情况下施工安全；

对堤顶变形有明显影响，

对堤脚变形有明显影响；背水侧地层水平位移最大点位随水位升高而靠近地表，迎水侧地层水平位移最大点位始终发生在地表。研究成果可为类似工程设计及施工安全提供参考。

Abstract

This study aims to investigate the influence of stratum disturbance induced by utility tunnel shield tunnelling under varying water levels in riverside areas on the safety of existing river levees. The section of the Anqing Yangtze River levee along Yanjiang East Road in Anqing City

where a shield tunnel was constructed in parallel with the existing levee

was taken as the study background. First

field measurement data were analyzed to obtain the basic deformation patterns of the river levee. Then

a three-dimensional fluid-structure interaction numerical model of the shield tunnel parallel to the existing river levee was established to investigate the effects of the shield-levee distance S and water level H on the stability of both sides of the river levee

the deformation of different parts (levee crest and levee toe)

and the horizontal displacement of the ground surface. The results showed that the settlement patterns at different parts of the river levee obtained from the numerical simulation were consistent with the field measurements. The numerical simulation showed that both S and H significantly affected the stability of river levee infiltration. The anti-sliding stability of the landside slope was more affected by S

while that of the waterside slope was more affected by H. At a spacing of 36 m

the hydraulic gradient J varied linearly with H

with a variation rate of 0.21/m. After shield tunnelling

J increased by 6.1%. The factor of safety Fs of the waterside slope increased

while that of the landside slope decreased

and the reduction in Fs became greater as the water level increased. At spacings of 24 m and 12 m

J increased by 12.8% and 17.9% after shield tunnelling

and the landside slope failed to meet the anti-sliding requirements when H exceeded 17 m. Maintaining S within 24–36 m ensured construction safety under different water levels. S significantly affected deformation at the levee crest

whereas H had a significant influence on deformation at the levee toe. The location of maximum horizontal displacement of strata on the landside moved closer to the ground surface as the water level increased

while that on the waterside always occurred at the ground surface. The findings provide a reference for the design and construction safety of similar projects.

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