2011•Highway EngineeringRequires access

The Monitoring and Analysis of Surrounding Rock On the Guan Jiao Tunnel Excavation

Ling Wenchang

Abstract

In the tunnel NATM design concept,Monitoring and Survey of Tunnel NATM becomes an important part,For controlling the real-time characteristics of surrounding rock deformation and supporting structure in the Qinghai-Tibet railway guan jiao tunnel,by adopting the JSS30A digital convergence meter,monitoring the peripheral displacement and dome subsidence of the rock,researching the rock mechanics condition,foreseeing and confirming the stabilize time.This is of important meaning to the safety construction.

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Available abstract

Key concepts: New Austrian Tunnelling method, Guan, Excavation, Geotechnical engineering, Geology, Displacement (psychology), Engineering, Subsidence