SU987103A1 - Method of working thick horizontal and gently sloping deposits - Google Patents

Description

(54) METHOD FOR DEVELOPING POWERFUL HORIZONTAL AND SHOCK-DEPRESSING ARRAYS

one

The invention relates to the mining industry and can be used in the development of mineral deposits with the laying of the developed space with hardening mixtures and the use of self-propelled equipment.

There is a method of mining minerals with chambers of the first and second stages, including - neither breaking the ore by drilling and blasting method, butt-type ore production and laying the mined-out space with hardening mixtures 1.

The closest to the proposed method is the development of deposits, including dividing deposits into panels, driving panel drifts, orts and races from each to each chamber, excavating minerals from the first and second chambers using self-propelled equipment, releasing ore from the primary chambers through the horns secondary chambers, and from secondary chambers from the ends of the ore and field ores, and the tab of the developed space 2.

The disadvantages of the known methods are substantial losses of broken, ore.

The purpose of the invention is to reduce the loss of minerals.

The goal is achieved according to the method involving division. deposits on the panel, penetration of ItelHbjx and rifled openings, panel drifts, orts and races from them into each chamber, excavation of ore by chambers of the first and second phases using self-propelled equipment, blasting of minerals by drilling and blasting, production of ore from primary chambers through orths secondary, and of the latter - from the ends of ore and field ores, and laying the mined-out space, the lower part of the primary Kaiyep is worked upwards from the bottom by shrub ore, leaving the ore in the upper corners of the roof from It is activated parts, then in the goaf gangue bulk form an angle of repose, and it is produced m ore breaking in the upper corners of the roof bottom of the primary chambers and testing of ostavi1eys top of the primary chamber

20 is carried out from a mazaged ore by blasting parallel wells.

FIG. 1 shows the preparation and cleaning of the panel, plan view; in fig. 2 shows section A-A in FIG. one.

The method of developing powerful horizontal and gently dipping deposits is carried out as follows.

From the haulage gateway 1 into the primary chambers 2 passes races 3, and in the secondary chambers 4 - transport ports 5, which are connected to the ventilation drift 6.

The recess of the lower part 7 of the primary chambers 2 is carried out with the aid of blast-hole ore blasting, and the roof is given a polygonal shape. Then, through the haulage and panel drifts, waste rock 8 is blown into the space with the help of self-propelled machines with a bucket working body or dump truck through the haulage and panel drifts to which the upper corners of the slide cutting are blown up to create a rotary platform. At the end of chambers 2, from the side of the ventilation drift 6, a cutting slit is passed, to which ore is fought off by parallel ascending wells, then the ore is released from both sides of the chamber along the slope of the rock bookmark through the ends of the races 9 and loaded with machines with a digging tool. After the ore production is completed and the insulating bridges 10 are erected, the exhausted space through the filling drift 11 and the boreholes 12 are filled with a hardening mixture 13.

At the end of the secondary chambers 4, rising walls also form and form cutting gaps. The ore is felled by parallel vertical wells drilled from the orts 5 and 14, with some of it being loaded from the bottom of the lower ore court to create a compensation space. At the end of the ore blasting, the frontal ore is produced, absorbing the roof of the loading and transporting port 15, while the directional blasting of a set of vertical fans of boreholes, the rock of the roof 16 is discarded and placed into the trench 17 that has been formed. bookmark.

High-performance self-propelled equipment, such as SBU-2M (2K), PNB-4, MoAZ, PMSZH, etc., are used to carry out preparatory workings and a clearing recess.

The use of the invention makes it possible to increase the efficiency of the development of minerals by chambers of the first and second stages with the laying of a goaf.

Claims (2)

Invention Formula The method of developing powerful horizontal and gently dipping deposits, including the division of deposits on the panel, driving panel shchtrekov, orts and races of them in each chamber, the excavation of minerals by chambers of the first and second phases using self-propelled equipment, the breaking of the mineral by drilling and blasting, the release of ore from the primary chambers through orths of secondary chambers, and from secondary ones from the ends of ore and field ores, and laying of the worked-out space, characterized in that, in order to reduce mineral losses, the lower part of the primary chambers is worked upwards by blast-hole ore, leaving the ore in the upper corners of the roof of the mined part; then, in the developed space, the bulk of the rock is formed at an angle of natural slope and ore is crushed into it in the upper corners of the roof of the lower part of the primary chambers, and the remaining upper parts of the primary chambers are mined from the ore by breaking down parallel wells. Sources of information taken into account in the examination 1. Dzhezkazgan Mining and Metallurgical Combine (mines 55 and 57). Technical project. Drawing number 415506. M., Giprotsvetmet, 1973. 2. Borscht-Komponiyets V.I. et al. Experience and prospects for the rational processing of powerful gently dipping deposits of ore from the Dzhezkazgan deposit. M., Tsvetmetinformatsi, 1978, p. 30-32, fig. 8 (prototype).