SU968406A1 - Method of working sloping mineral deposits - Google Patents

Description

(54) METHOD FOR DEVELOPING THE HEATING-FREE DEPOSITS OF MINERAL RESOURCES

The invention relates to the mining industry and can be used in the underground mining of millstone coolant, ore and coal deposits.

There is a method of mining minerals under the ore mat 1.

The closest to the invention is a method of mining ore deposits, including the penetration of rifled and preparatory horizontal and rising workings, the formation of a floating ceiling (mat), blasting of minerals, the collapse of lightweight rocks and the release of minerals under the floating ceiling 2.

The disadvantage of the known methods is the uncontrollability of the floating ceiling with the release of ore.

The purpose of the invention is to ensure uniform lowering of the floating ceiling.

The goal is achieved by the fact that the vyrabtski in the ceiling, in which the source of oscillations is placed, pass from the rising person, when releasing a mineral fossil on the ceiling, influenced by oscillations from this source, and as the ceiling is lowered, the output in it is knocked down with the rising person.

FIG. Figure 1 shows a scheme for implementing a method of developing a steep: a mine giving a mineral with a floating ceiling (a vertical section along the strike of a deposit and across the strike of a deposit)} in FIG. 2 shows section A-A in FIG. one.

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The division of the field into floors, floors into excavation blocks, the formation of the bottom and the breaking of mineral resources are carried out using well-known methods. On the top floor in each room

The 15th block is decorated with the floating ceiling 1. For strong ores, the floating ceiling 1 can be made of a part of the mineral block by cutting it from all sides along a contour using cut-off slots. For ores of low strength and coal, they make artificial floating ceilings from hardening materials and, if necessary, are reinforced with steel or synthetic materials. For steady movement in the clearing space, the floating ceiling 1 is made not less than the thickness of the mineral deposit and can

Claims (2)

30 to have a bulge in the middle part, forming a body equal to the resistance to movement. In floating ceiling 1 Passing generation 2, in which a source of seismic vibrations is mounted, for example, a powerful electromagnetic vibrator 3. Depending on the size of floating ceiling 1, one, two or four sources of seismic vibrations can be mounted in it, for which it passes additional production 4 (shown by dotted lines). The evaluation of the uniformity of the lowering of the floating ceiling 1 when the release of mineral 5 is carried out by means of cables b and 7, which are passed through the collapsed mineral 5 (for example, through pre-drilled wells) and extreme outflow funnels 8 and 9 to the delivery mine 10 and the transport field the drift 11. Vertical production 12 for access to the vibrator 3 through the coupling 13 passes along the hanging or lying side of the deposit over the empty rocks on. distance - scientific research institutes, for example, 2-3 m from the contact of the deposit with the remaining 11 of the rear sight 14, Vertical development 2 can also be traversed by mineral in the interblock pillar. ; After preparation of the block and ore blasting, its ore is made to be uniformly discharged through the outlet funnels and the trace along the length of the tapped cables 6 and 7 as the floating ceiling 1 moves in the clearing space. When a lag in the ceiling movement is detected, a source of seismic vibrations 3 is put into operation, by means of which seismic low-frequency oscillations are excited in it. Due to these vibrations, the friction and adhesion of the cleaning space to the floating ceiling 1 and its movement under its own weight are reduced. With large block sizes, the bottom has several rows of outlet funnels and, in this case, the lowering of the ceiling is assessed by four cables in the corner of the funnels, and in the floating ceiling 1 four sources of seismic vibrations are installed and one or another floating corner of the ceiling is lagging include in work one of four sources of fluctuations. As the floating ceiling 1 is lowered, the pillar 14 between the excavation 12 and the cleaning space is destroyed, providing constant access to the source of seismic vibrations. After the block has been worked out, the bottom is destroyed and the lowering ceiling 1 is passed to work out the block of the underlying floor, i.e. reused. The use of the effects of oscillations from an artificial source on the floating ceiling will allow the use of the proposed sinter for the development of deposits of ore and coal with a capacity of more than 5 meters with an angle of incidence OT 50 and higher with host rocks of medium stability. Development can be carried out with the collapse of overlying waste rock, as well as with filling the goaf. The invention method of development of steeply dipping mineral deposits, including the driving of rifled and preparatory horizontal and rising workings, the formation of floating ceilings, blasting of minerals, the collapse of overlying rocks and the release of minerals under the floating ceilings, distinguished by the fact that in order to ensure uniform descent , ceilings, from an ascendant, are passed in the ceiling of the mine / in which a source of oscillations is placed, with the release of mineral resources for sweat Lochin affect wobbles from that source, and as lowering production potolochiny knocked rise up therein. Sources of information taken into account in the examination 1. The author's certificate of the USSR No. 78512, cl. E 21 C 41/06, 1948. 2. Authors certificate of USSR 542830, cl. E 21 C 41/06, 1974 (prototype).