Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia



Advanced Search

Journal of Mining Sciences

2016 year, number 1

Elastoplastic Problem for Various Cross-Section Tunnels on the Assumption of Coulomb’s Limit Equilibrium

A. G. PROTOSENYA, M. A. KARASEV, N. A. BELYAKOV
National Mineral Resources University-Mining University, V.O. 21-aya liniya 2, Saint-Petersburg, 199026 Russia
Keywords: упруго-пластическая задача, условие Кулона, выработка, напряжение, зона предельного состояния, elastoplastic problem, Coulomb’s condition, tunnel, stress, critical state zone

Abstract

An elastoplastic problem is considered for elliptical, arched, square and polygonal cross-section tunnels on the assumption of Coulomb’s limit equilibrium and varied lateral earth pressure coefficients in intact rock mass. The problem is solved using the method of small parameters and the finite element method. The elastoplastic solutions are obtained for mutually influencing tunnels. The mechanisms of concentration of vertical stresses in a pillar established between mutually influencing tunnels are determined.