SU883443A1 - Method of working adjoining gently sloping potassium beds - Google Patents

Description

(54) METHOD FOR DEVELOPING ADDICTED EPOLOGICAL POTABLE LAYERS

I

The invention relates to the mining industry and can be used in underground mining of contiguous flat potash reservoirs with laying the worked out space.

A known method for developing contiguous flat potash reservoirs with chambers, including penetration of ventilation and transport drifts along each developed thick layer with formation of the neck of the chamber in conjunction with the transport drift and conduction of glades between the chambers (1 ..

The disadvantages of this method are a significant amount of preparatory work, the impossibility of using self-propelled equipment for excavating individual (upper) layers with complex folding, and the loss of low-thickness ore layers located between powerful seams.

The closest technical solution to the described invention is a method of developing closely spaced potash layers by chambers, which includes excavation of minerals within the excavation area in layers, bottom-up with a tab along which the self-propelled equipment moves, breaking the rock layers, leaving the pillars and carrying out the transport and ventilation of the construction drifts 2.

The disadvantages of this method are the large losses of time for moving the equipment from the chamber to the chamber, the loss of the mineral in the near-track pillars and the large amount of penetration of development workings.

The purpose of the invention is to increase labor productivity and reduce the loss of minerals.

This is achieved by working out all the closely spaced layers at the same time, the layers begin to be excavated from the grains of the excavation section with the waste, after the mineral deposits are excavated in the chambers, the rock layers collapse and backfill them, and the rock layers collapse and the bedding is produced a length of not more than half. the chamber and the boundaries of the collapsed sections of the rocks are placed along the horizontal axial lines of the inter-chamber pillars

At the same time, with the laying of the next layer between the chambers, they form oblique exits.

In addition, the excavation of the near-current stocks is carried out simultaneously with the cleaning excavation in the chambers.

The drawing shows an extraction site illustrating the procedure for mining a mineral.

In chamber 1, the lower layer is excavated. In chamber 2, rock layer 3 is collapsed and backfilled with backfill material 4. In order to allow the equipment to move from chamber to chamber in the glades carried out during cleaning, inclined ramps are formed 5. To shorten the path when moving self-propelled machines through the chamber, In which the rock layers collapse and inlay, these works are carried out in sections of length not exceeding half the length of the chamber. To reduce the scope of work for p6 to maintain rock ledges and to form inclined ramps from the layer to layer, the boundaries of the collapsed areas are placed along the horizontal axial lines of the inter-chamber pillars 15.

In the chamber 6 are the excavation of the second bottom layer of the mineral. The ore is delivered to the main transport drift 7 or an additional transport drift (not shown) through the projections with oblique heats formed in them. In chamber 8, the second Breed layer is collapsed and the tab is laid. The works are carried out by analogy with chamber 2. In chamber 9, the third layer of the mineral was dredged, in chamber 10 -. collapse of the third breed layer in the tab. In chamber 11, the upper layer is excavated, and after it is completed, the chamber is filled with filling material. The bookmark material is served by a conveyor located on the backfill drift 12 through the wells 13..

The development method involves the excavation of the layers located under the ventilation 14 and stowing 12 drifts. As the sewage front moves

The operations simultaneously carried out the excavation of the near-ore reserves of ore with the same parameters as the clearing excavation.

The use of the proposed method allows to increase the extraction of mineral 5, to increase the concentration of work and labor productivity, as well as to reduce the volume of preparatory work.

Claims (2)

1. The method of development of adjacent flat potash layers by chambers, including the excavation of minerals within the excavation area layers below upward with backfilling with backfill material, on which self-propelled equipment moves, the collapse of the rock layers, leaving between the chamber pillars and carrying out of the transport and ventilation cliff tracks, characterized in that, in order to increase labor productivity and reduce the loss of mineral, all of the closely spaced formations are tested simultaneously the excavation of the layers begins. from the border of the excavation site with ot5 workman, after excavation of the mineral layers in the chambers, rock is produced layers and filling their stowing material, the collapse of the rock layers and derivatives tab portions m of not more than half of the chamber, and 8 borders of the collapsed sections of rocks are placed along horizontal axial lines of interchamber pillars, and simultaneously with the laying of the next layer between the chambers, they form inclined congresses. 2. A method according to claim 1, characterized in that the excavation of the near-track stocks is carried out simultaneously with the cleaning excavation in the chambers. Sources of information taken into account in the examination of i-Andreichev, A. N. Development of potash and stone-bearing deposits. Goskhimizdat, 1953, Part I, p. 25 2. USSR author's certificate yo application no. 2766292, cl. E 21 C 41/06, 14.05.79 (prototype). Cvj t 04