Authors: V.Р. Tatsienko, V.A. Gogolin, I.A. Ermakova, Lesin , A.S. Liskovets

Title of the article: Calculation of the support with filling of the space behind the support

Year: 2019, Issue: 3, Pages: 75-81

Branch of knowledge: 25.00.22 Geotechnology (underground, open and construction)s

Index UDK: 622.831

DOI: 10.26730/1999-4125-2019-3-75-81

Abstract: In the article, the calculation of the stress-strain state of the system «support – filling layer – rock mass» is shown for the first time. The behavior of the rock mass is described taking into account the formation of a zone of disturbed rocks. The strength criterion of rocks with bulk compression is used to highlight the zone of disturbed rocks. The equation of the hyperbolic dependence between circumferential stresses and deformations in the zone of disturbed rocks is given. The solution of the equilibrium equations is obtained taking into account the proportionality of the circumferential and radial stresses in this zone. The equations for calculating the pressure on the lining and the displacements of the upper member were obtained taking into account the continuity of radial displacements and radial stresses at the boundaries of the ring blocks «support – filling layer – disturbed rocks – an array of undisturbed rocks». The strength of the support is checked by the criterion of More, the strength of the filling layer is checked by the criterion of failure under bulk compression. The criterion for the formation of a zone of disturbed rocks has been developed and takes into account the depth of development and the compressive strength of rocks. The developed method allows to calculate the pressure on the support and displacement of the roof girder depending on the width of the filling layer and its deformation modulus.

Key words: support filling layer pressure on support displacement of the roof girder

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