Open AccessMonitoring and numerical simulation analysis of corrugated steel support in weak surrounding rock mountain tunnels
Author(s) -
Wentong Liu,
Xiaoming Wang,
Jinliao He,
Wenqi Ding,
Qingzhao Zhang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/741/1/012042
Subject(s) - geology , geotechnical engineering , computer simulation , mining engineering , structural engineering , engineering , simulation
Monitoring is one of the three elements of the NATM, and it plays a guiding role in tunnel construction. At present, there are few engineering projects of using the new corrugated steel assembled structure as the initial support of the tunnel. It is of great practical significance to research its monitoring and measurement, and it can accumulate experience and provide references for the design of the initial support of the corrugated steel. In this paper, based on a weak surrounding rock mountain tunnel in Yunnan Province, which uses the corrugated steel structure as the initial support, through the analysis of the on-site monitoring data and the establishment of the corresponding finite element numerical model, it is found that the stress of the tunnel arch foot is relatively large. At the same time, the monitoring and numerical calculation of the tunnel convergence values are compared and verified, which proves the reliability of the monitoring and the calculation.