Review on the Instability Mechanism of Tunnel Center Diaphragm Under Blasting Action

Ji Chen; Yuqing Hu

doi:10.6911/WSRJ.202607_12(7).0001

Authors

Ji Chen Department of Civil Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China
Yuqing Hu Department of Civil Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China

DOI:

https://doi.org/10.6911/WSRJ.202607_12(7).0001

Keywords:

Tunnel Engineering, Intermediate Partition Damage, Blasting Engineering, Local instability.

Abstract

Tunnel blasting is a complex and critical process in engineering geology and tunnel construction. The middle partition support structure and temporary support structure during the tunnel construction period are prone to vibration instability, which poses a great risk of damage to the tunnel. Therefore, investigating the mechanism of instability of intermediate partitions under explosive loads is of great significance for enhancing the safety and economy of tunnel projects. This paper provides a comprehensive overview of the characteristics of tunnel blasting loads, analyzes in detail the changes in the stress state of intermediate partitions under blasting actions, and summarizes the current research methods and achievements on the instability mechanism of intermediate partitions, including numerical simulation, field monitoring, and theoretical analysis. It aims to provide references for a deeper understanding of the instability issues of intermediate partitions and for improving the safety of tunnel construction.

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