METHOD FOR DETERMINING INTERNAL STRESSES OF SOLID EXCAVATION AND LAYING MATERIAL Russian patent published in 2021 - IPC G06F30/20 E21F15/00 

FIELD: mining.

SUBSTANCE: present invention relates to a method for determining internal stresses of solid laying material. The method for determining internal stresses of solid laying material includes following stages: a stage of 1) receiving data on stresses of solid laying material and establishing a ratio of stress-deformation in solid laying material; a stage of 2) calculating surface subsidence in a solid laying area based on the theory of equivalent height of a purification space, when excavating a formation using a probability integration method; a stage of 3) calculating an expansion height of a crack formation zone in the specified area under conditions of coal mining with solid reverse laying; a stage of 4) calculating a deformation in solid laying material at a distance L from the rear part of a breakage face using values obtained at stages 2) and 3); a stage of 5) calculating internal stresses in solid laying material at the distance L from the rear part of a working face.

EFFECT: creation of a simple method used for the calculation of stress distribution in surrounding formations, when mining by a solid excavation and laying method, providing recommendations for the projection of mining by the excavation and laying method and supporting structures.

9 cl, 5 dwg