ERECTION METHOD OF TWO-LAYER SUPPORT OF MINE WORKING IN SALIFEROUS AND SALINIFEROUS ROCKS Russian patent published in 2014 - IPC E21D11/04 E21C41/20 

FIELD: mining.

SUBSTANCE: invention relates to mining industry, and namely to support of mine workings and their conjugations in saliferous and saliniferous rocks, and namely at construction of responsible underground structures that allow no formation of cracks in concrete support, for example water collectors for waters not saturated with salts or conjugations of well shafts with approach mine workings and dosing chambers. First, based on mining and geological conditions of the mine working being designed, there determined is thickness of a flexible layer of the support. Then, a mine working is driven; its roof and walls are fixed with temporary anchor support. After that, the flexible layer is constructed out of polystyrene slabs by installing them tightly to the mine working rock. Then, a monolithic concrete support is erected; with that, thickness of the flexible layer of the support is determined considering the displacement speed of the rock outline of the mine working, service life of the mine working and compressibility coefficient of flexible layer material.

EFFECT: invention allows simplifying and reducing labour intensity of works on erection of a two-layer support and improving supporting efficiency due to controllability of flexible layer thickness.

3 cl, 2 dwg