In this paper,a new construction monitoring method for large cross-section tunnels in underground projects and a new astringe surveying rod developed are introduced.

• 介绍了井下大断面巷道施工监测新方法和研制的新型测杆,并探讨了监测数据在井下大断面巷道围岩反分析、收敛规律和松动圈等方面的应用。