MATHEMATICAL AND COMPUTER MODELING OF STRESS STATE OF THE ROCK MASS AROUND A CIRCULAR OPENING WITH REGARD TO CONTACT RIGID ANCHORS
A.S. Sammal1, V.K. Nguen1, T.M. Chan2
1Tula State University, Tula, Russia
2Hanoi University of Mining and Geology, Hanoi, Vietnam
Keywords: Opening, contact anchor support, analytical method, designing, stress state, computer modeling
Abstract
An analytical method is presented for determining the stress state of a rock mass in the vicinity of a circular opening, taking into account the influence of contact anchors with high rigidity. The method is based on the solution of a plane problem from the elasticity theory about the equilibrium of a weighty isotropic medium with a circular hole, around which there is a certain region reinforced with an arbitrary number of radially installed rods with high rigidity. The calculation examples illustrating the possibilities of the method are presented. For the purpose of comparison, the corresponding results of computer modeling using the finite element method are considered.
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