Technology on Settlement Control of Large Diameter Shield Traversing Closely Beneath High-pressure Gas Pipeline for Metro Tunnel | Zendy

Xin-Qiang Li | Zendy; Renguang Wen | Zendy; Wei Li | Zendy; Zhiwei Pan | Zendy; Wang Fu-qian | Zendy; Peng Shen | Zendy

Open Access

Technology on Settlement Control of Large Diameter Shield Traversing Closely Beneath High-pressure Gas Pipeline for Metro Tunnel

Author(s) -

Xin-Qiang Li,

Renguang Wen,

Wei Li,

Zhiwei Pan,

Wang Fu-qian,

Peng Shen

Publication year - 2021

Publication title -

iop conference series earth and environmental science

Language(s) - English

Resource type - Journals

eISSN - 1755-1307

pISSN - 1755-1315

DOI - 10.1088/1755-1315/632/2/022076

Subject(s) - traverse , shield , settlement (finance) , pipeline (software) , borehole , geotechnical engineering , engineering , line (geometry) , high pressure , mining engineering , geology , mechanical engineering , computer science , petrology , geometry , mathematics , geodesy , world wide web , payment , engineering physics

Taking the project of sectional tunnel traversing closely beneath high-pressure gas pipeline on Weiqing Line between Xinglong Station and Tianfuxin Station in Chengdu Metro Line 18 for an example, the technology controlling the settlement is studied. Based on the reinforcement isolation grouting with inclined boreholes, driving control parameters of shield and grouting behind the sectional tunnel lining with deep holes, the control technology on the large diameter shield passing closely beneath high-pressure gas pipeline is established for metro tunnels. The application of this technology controls the settlement of high pressure gas pipe within - 4mm, less than - 5mm, which verifies the practicability of this technology. At the same time, it greatly improves the stability of pipeline, guarantees the safety of pipeline operation, and provides the reference for similar projects in the future.

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