TBM管道隧道下穿施工对既有管道影响规律研究
Study on the deformation influence pattern to existing pipeline caused by undercrossing TBM pipeline tunnel
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- 引用格式:
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付欣,胡文君,王晓峰,黄鹏,李衍昭,程旭东.TBM管道隧道下穿施工对既有管道影响规律研究[J].天然气与石油,2023,41(3):20-26.doi:10.3969/j.issn.1006-5539.2023.03.004
FU Xin, HU Wenjun, WANG Xiaofeng, HUANG Peng, LI Yanzhao, CHENG Xudong.Study on the deformation influence pattern to existing pipeline caused by undercrossing TBM pipeline tunnel[J].Natural Gas and Oil,2023,41(3):20-26.doi:10.3969/j.issn.1006-5539.2023.03.004
- DOI:
- 10.3969/j.issn.1006-5539.2023.03.004
- 作者:
- 付欣1 胡文君1 王晓峰1 黄鹏1 李衍昭2 程旭东2
FU Xin1, HU Wenjun1, WANG Xiaofeng1, HUANG Peng1, LI Yanzhao2, CHENG Xudong2
- 作者单位:
- 1.中国石油工程建设有限公司西南分公司, 四川 成都 610041; 2.中国石油大学(华东)储运与建筑工程学院, 山东 青岛 266580
1. CPECC Southwest Company, Chengdu, Sichuan, 610041, China; 2. College of Pipeline and Civil Engineering, China University of Petroleum(East China), Qingdao, Shandong, 266580, China
- 关键词:
- 数值模拟;TBM隧道;下穿管道;影响分析
Numerical simulation; TBM tunnel; Undercrossing pipeline; Impact analysis
- 摘要:
为研究小断面管道隧道(Tunnel Boring Machine,TBM)施工工法下穿施工条件下上覆既有管道的变形特征,以某工程为背景,采用数值模拟方法分析了在管道隧道下穿施工过程中上覆既有管道的变形过程。在此基础上,进一步研究了管道隧道与上覆既有管道的垂直净距H和交叉角度β对上覆既有管道的影响。结果表明:H主要影响上覆既有管道的剪切应变,β主要影响上覆既有管道的变形范围,在管道隧道规划设计时,应重点考虑H的影响;管道隧道交叉位置前2D至后4D(D为管道隧道直径)是影响上覆既有管道变形的敏感施工范围,造成上覆既有管道主要变形范围为管道隧道左右5D,在施工至敏感范围时,应在上覆既有管道的主要变形范围内加强沉降监测,若测量结果达到警戒值,应采取补强措施。研究结果可为后续类似工程的设计与施工提供参考。
In order to study the deformation characteristics of existing pipeline overlying under the construction conditions of TBM (Tunnel Boring Machine) method for small-section pipeline tunnel, this paper is based on a certain project as the background to analyze the deformation process of existing pipeline during the construction of pipeline tunnel by numerical simulation. On this basis, the influence on existing pipeline of vertical clearance H and crossing angle β between pipeline tunnel and existing pipeline is further studied. The results show that H mainly affects the shear strain of existing pipeline, and β mainly affects the deformation range of existing pipeline, and the influence of H should be considered during the planning and design of pipeline tunnel. The front 2Dto the last 4D (D is the diameter of the pipeline tunnel) of the pipeline tunnel crossing position is a sensitive construction zone that affects the deformation of the existing pipeline, resulting in the main deformation range of the existing pipeline about 5D left and right of the pipeline tunnel. When the construction approaches the sensitive zone, the settlement monitoring should be strengthened within the main deformation range of the existing pipeline. If the measurement results reach the warning set point, reinforcement measures should be taken. The research results can provide a reference for the engineering design and construction of similar projects in the future.
