THERMAL SCIENCE

International Scientific Journal

Yi-Ming Chen

,

Shuang You

,

Wei-Chen Liao

,

Jun-Da Wang

,

Hai-Chun Hao

,

Zhou Yu

EVALUATION OF CONSTRUCTION IMPACTS AND OPTIMIZATION OF CONTROL MEASURES FOR LARGE-SECTION METRO TUNNELS OVERPASSING EXISTING TUNNELS

ABSTRACT
The development of urban rail transit has led to an increase in the number of large section subway tunnels crossing existing tunnels. This study combines the actual engineering of the Yanggongqiao Station Longzhuayan Station section tunnel of Chengdu Metro Line 17 Phase II project crossing the existing Line 7 shield tunnel, and uses on-site investigation, monitoring, and numerical simulation methods to evaluate the construction impact. Based on this, measures such as bench pile reinforcement, pre grouting, and parameter optimization are proposed. In practical applications, the comparison between monitoring and simulation results shows that these measures effectively control the deformation of existing tunnels, providing important references for similar projects.
KEYWORDS
large section subway tunnel, upside construction, impact assessment, optimization of control measures, engineering application
PAPER SUBMITTED: 2024-09-01
PAPER REVISED: 2024-11-10
PAPER ACCEPTED: 2024-11-27
PUBLISHED ONLINE: 2025-06-01
DOI REFERENCE: https://doi.org/10.2298/TSCI2502417C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2025, VOLUME 29, ISSUE Issue 2, PAGES [1417 - 1422]
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PDF VERSION [DOWNLOAD]
Evaluation of construction impacts and optimization of control measures for large-section metro tunnels overpassing existing tunnels

2025 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence