TY - JOUR
TI - Evaluation of construction impacts and optimization of control measures for large-section metro tunnels overpassing existing tunnels
AU - Chen Yi-Ming
AU - You Shuang
AU - Liao Wei-Chen
AU - Wang Jun-Da
AU - Hao Hai-Chun
AU - Yu Zhou
JN - Thermal Science
PY - 2025
VL - 29
IS - 2
SP - 1417
EP - 1422
PT - Article
AB - 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.