新建暗挖隧道穿越上覆雨水箱涵与下卧既有隧道施工影响研究

罗云华; 周向国; 李堂磊; 张永兴; 张学民

doi:10.20265/j.cnki.issn.1007-2993.2025-0276

新建暗挖隧道穿越上覆雨水箱涵与下卧既有隧道施工影响研究

doi: 10.20265/j.cnki.issn.1007-2993.2025-0276

1.
广东天信电力工程检测有限公司，广东广州　510000
2.
南京林业大学，江苏南京　210037
3.
中南大学，湖南长沙　410018

详细信息

作者简介:
罗云华，男，1978年生，硕士，高级工程师，主要从事地基基础等方向研究工作。E-mail：26789132@qq.com

通讯作者:
张永兴，男，1981年生，博士，教授，主要从事隧道与地下工程等方向研究工作。E-mail：zhanguongxing81@aliyun.com

中图分类号: U45
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- 文章访问数: 30
- HTML全文浏览量: 10
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2025-06-20
- 修回日期: 2025-08-19
- 录用日期: 2025-08-25
- 网络出版日期: 2026-10-08
- 刊出日期: 2026-10-08

Construction impact of a new mined tunnel undercrossing an overlying stormwater box culvert and an underlying existing tunnel

1.
Guangdong Tianxin Electric Power Engineering Testing Co., Ltd., Guangzhou 510000, Guangdong, China
2.
Nanjing Forestry University, Nanjing 210037, Jiangsu, China
3.
Central South University, Changsha 410018, Hunan, China

摘要

摘要: 新建地下工程近接既有地下结构的工程类型愈发普遍，严格控制该类新建地下工程施工对既有地下结构的影响是工程建设成功的关键。某地铁站新建换乘通道暗挖隧道穿越上覆雨水箱涵与下卧既有隧道，以该暗挖工程为背景，基于现场实测与三维有限元分析，研究中洞法施工工艺对地表沉降、新建隧道及既有结构物变形的影响规律。研究表明：新建暗挖隧道采用中洞法分层、分块、分区、分段施工，并结合水平旋喷桩超前预加固不良地层，可有效控制地层沉降及结构物变形；中洞法施工的开挖进尺对既有隧道与雨水箱涵变形影响较大，施工中需要严格控制开挖进尺，以减小对既有结构的影响。研究成果可为同类地下工程建设提供借鉴。
- 新建暗挖隧道 /
- 穿越施工 /
- 上覆雨水箱涵 /
- 下卧既有隧道 /
- 中洞法 /
- 扰动控制
Abstract: New underground projects in close proximity to existing underground structures are becoming increasingly common. Strictly controlling the impact of the construction of such new underground works on existing structures is the key to the success of the project. Taking the construction of a new transfer passage tunnel at a subway station, which underpasses an existing tunnel and passes beneath an overlying stormwater box culvert, as a case study, this paper investigates the influence laws of the Center Diaphragm (CD) method on surface settlement and the deformation of both the new tunnel and existing structures. The study is based on field monitoring data and three-dimensional finite element analysis. The results indicate that adopting the CD method—characterized by layered, block, zoned, and segmented excavation—combined with advance horizontal jet grouting for ground improvement, can effectively control ground settlement and structural deformation. Furthermore, the excavation footage in the CD method significantly affects the deformation of the existing tunnel and the stormwater box culvert; therefore, the excavation footage must be strictly controlled during construction to minimize impacts on existing structures. The findings of this study can provide valuable references for the construction of similar underground projects.
- newly built mined tunnel /
- undercrossing construction /
- overlying stormwater box culvert /
- underlying existing tunnel /
- Center Diaphragm (CD) method /
- disturbance control

HTML全文

图 1 新建暗挖隧道布置图

Figure 1. Layout plan of newly built underground tunnel

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图 2 工程地质剖面图

Figure 2. Engineering geological profile

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图 3 暗挖隧道超前加固与施工工艺

Figure 3. Advance reinforcement and construction technology for tunnel

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图 4 暗挖隧道地表及拱顶沉降监测点布置

Figure 4. Monitoring points layout for ground surface and tunnel arch settlements

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图 5 数值计算模型

Figure 5. Numerical calculation model

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图 6 新建暗挖隧道上方地表沉降

Figure 6. Surface subsidence above newly constructed tunnel

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图 7 新建暗挖隧道拱顶沉降

Figure 7. Arch settlement of newly constructed tunnel

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图 8 既有隧道与雨水箱涵竖向变形

Figure 8. Vertical deformation of tunnel and rainwater tank culverts

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图 9 不同开挖进尺下既有结构物竖向变形曲线

Figure 9. Vertical deformation curve of existing structure under different excavation depths

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表 1 主要地层物理力学参数

Table 1. Physical parameters of soil

地层	厚度 /m	密度 /（kg·m⁻³）	弹性模量 /MPa	泊松比	黏聚力 /kPa	内摩擦角 /（°）
素填土	5.0	1800	7	0.35	10	10
淤泥质黏土②₂	5.0	1740	4	0.43	5	3
粉质黏土③₄	1.7	1950	25	0.30	25	25
粗砂③₈	9.1	1960	50	0.26	0	28
全风化花岗岩⑧₁	1.0	2000	80	0.28	28	35
砂土状强风化花岗岩⑧_2-1	14.0	2200	100	0.28	37	45

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