Research of Surrounding Rock Classification Correction Method

Abstract:

At present, both at home and abroad of tunnel surrounding rock classification methods and standards are all aimed at tunnel survey and design phase. It is the cause of that surrounding rock classification are very different between design phase and tunnel construction because of the limits of investigation techniques and geological data. It is the key to the real-time construction design problem that Sentenced to a stable state of surrounding rock based on the monitoring data. This paper determines the influence factors of tunnel convergence value clearance and obtained the tunnel convergence value clearance of principal component factor and power based on the statistical analysis of a lot of tunnel monitoring measurement data. It is put forward correction formula of dynamic classification of surrounding rock according to the theory of probability and statistics. The results show that based on the real-time monitoring of tunnel surrounding rock classification method is quite coincident with the actual situation of tunnel excavation in engineering applications.

• Periodical: Applied Mechanics and Materials (Volume 777)
• Pages: 74-84
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.777.74
• Online since: July 2015
• Authors: Hong Liang Deng*, Si Miao Wang, Ge Chen, Yang Guo
• Keywords: Correlation Coefficient, Headroom Convergence, Principal Component Factor, Statistical Analysis, Tunnel Surrounding Rock Classification

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