盾构隧道两次近距离下穿既有运营地铁的施工技术研究

Key Points

• This research aims to explore construction techniques for shield tunneling that minimize impact on existing subway systems.
• Two successful shield tunneling operations were conducted near subway line 2, maintaining a distance of only 3.28m.
• The construction process was divided into five segments, and automated information monitoring was employed for real-time guidance.
• Emergency decision teams tracked operations closely, ensuring timely measures were implemented.
• Successful tunneling under subway line 2 with continuous monitoring until stability of indicators was achieved.
• Timely maintenance and enhancement of the shield cutter’s strength contributed to the smooth operation.