SU1078071A1 - Method of mining thick beds under quick ground - Google Patents

Abstract

A METHOD FOR DEVELOPING POWERFUL STRAYS UNDER WATER, including layer processing by lavas with a roof collapse behind the lava working space, characterized in that, in order to increase the development efficiency by reducing the labor intensity of the works, the lava working space is isolated by way of the collapse of the underlay of a mineral, the capacity of which takes more than the capacity of any individual layer to be removed, and the collapse of the underlay of the mineral produced on plane having a slope toward slaughtering.

Description

The invention relates to the mining industry and can be used in the excavation of thick coal seams from natural rocks. There is a known method of developing powerful boards: volatile, dangerous for breaking through quicksand, providing for their preliminary implementation and "as protective measures., Releasing quicksands by detonating chamber charges 1. The disadvantage of this method is low efficiency and high labor intensity. There is a known method of developing thick seams beneath the quicksand, which includes layer-by-layer mining with lavas with roof collapsing behind the working space of lava 2. A disadvantage of the known method is the low labor intensity of its implementation. The aim of the invention is to increase the efficiency of development by reducing the labor intensity of the work. This goal is achieved by the fact that according to the method of developing thick seams under floods, including layer-by-layer mining with lavas with roof collapse behind the lava working space, the layers are worked out in a descending order, the lava working space is isolated by breaking the underlay of the mineral, whose power takes more any individual layer to be removed, and the mineral under-roof layer is collapsed along a plane sloping towards the bottom. The drawing shows a section of a powerful reservoir under the quicksand. A thick layer beneath the quicksand 1 is processed by layers 2-4, in descending order, leaving the mineral underlaying layer 5, which is forcibly crushed as the lava moves, and, after it has been crushed, in the form of a bridge 6, the working space is insulated lavas 7. For reliability of isolation, the power of the roofing layer 5 takes more than the power of any removable layer 2-4. The collapse of under-roofing layer 5 is carried out along planes 8 and 9, which are inclined to the side of the bottom. Inclined planes are created by blasting contour holes that are inclined toward the bottom. When using the proposed method, the labor intensity of the work is significantly reduced, and the working space of the lavas is reliably isolated from the silty rocks.

Claims (1)

METHOD FOR DEVELOPING POWERFUL LAYERS UNDER SWIMMINGS, including layer mining by lavas with roof collapse behind the lava working space, characterized in that, in order to increase the development efficiency by reducing the complexity of the work, the layers are worked out in a descending order, the lava working space is isolated by collapsing the subroofing layer a mineral whose power is greater than the power of any individual removable layer, and the collapse of the subroofing layer of a mineral is carried out bone having a slope towards the bottom.