SU589407A1 - Method of working interchamber pillars - Google Patents

Description

(54) METHOD FOR DEVELOPING BETWEEN CELLERS

one

The invention relates to the mining industry and can be used for excavation between the chamber pillars in the underground mining of steeply dipping deposits of average MOUiHOCTH.

There is a method of working out between chamber pillars, which consists in dredging the rear panel from the bottom up, using easel support and laying out the worked-out space (1).

The disadvantage of this method is low labor productivity and high cost of mining.

There is a method of working out between chamber pillars below and under the protection of the suspension shelf, which includes drilling and blasting operations, fixing the cleaning space, the delivery of the mineral and laying the spent space (2.

The disadvantage of this method is the laboriousness of preparing and delivering the backfill material into the developed space, as well as reducing safety of work due to the suspension of the overhead shelf above the developed space after lifting it before the backfilling.

The aim of the invention is to increase productivity and safety.

This is achieved by working and fixing the roof from the base of the regiment, which has the shape of an isosceles triangle and facing vertically downwards, the broken rock mass is moved inside the regiment, from where it is transported to the workings, and after preliminary lifting the regiment it is lowered the tab that filled the space developed under it.

FIG. I shows the shelves, the plan; in fig. 2 - sec. Of a hollow with a section of a pillar along the strike of a deposit; in fig. 3 shows a section along A - A in FIG. 2

The method of working out the rear sight is as follows.

five

In the supine side of the ore body, the rebels pass I. At the bottom horizon, the ort is passed for mounting on the / spring shelf 2.

Suspended shelves are constructed in the form of a triangular prism from separate sections, the lateral inclined sides of which are sheathed

0 iron sheet.

The angle of inclination of the sides is assumed to be equal to the angle of repose of the material of the bookmark (rock). The end of the shelf, adjacent to the side of the flange, is also trimmed with 5 iron sheets.

To increase the strength and rigidity of the structure inside the shelf MOHjHpyeTCH channel frame.

A metal grid 3 is attached to the top of the shelf to the frame.

The sections of the suspension shelf can be moved one relative to the other vertically along the guides 4. Inside the shelf, conveyors 5 are installed, for example, scraper or vibrating.

When the ore body is of low power, inclined trays can be installed instead of kWneweers.

A winch 7 is installed in the upper horizon 6. From the Orth 6, wells are drilled for the ropes 8 and ventilation. In order to reduce the friction of the ropes against the borehole walls, the rollers 9 are mounted on the soil of the Orth 6.

Each rope is tensioned using a block 10 connected to the cable 1 of the winch 7. The upper ends of the ropes 8 are secured with a loop 12 embedded in the drilled hole, and the lower ends to the sections of the suspension shelf.

After ore bashing, the ore is made from rising I at the level of the grid of the suspension shelf 2. Then, bottom 2 is used for the shelf 2, and the holes are placed horizontally. Replaced by the explosion of the ore under the action of its own weight passes through the lattice and is delivered in the manner described earlier to the ore release. During the excavation process, the cleaning space is secured with racks 13, for example, pneumatic, hydraulic or wooden.

After the layer of ore is crushed above the overhead shelf, sections are lifted alternately from the hanging side to the recumbent bed.

When the suspension shelf 2 is raised, rock 14 enters by gravity from the cells adjacent to the rear sight, previously laid with non-cemented material, and fills the void under the shelf. The breed under the suspended regiment will be distributed over two slopes with the corners of the rabbis corner of the natural slope of these breeds.

Then the hanging shelves are lowered onto the rock that fills the emptiness below it.

This method simplifies the process of laying the worked-out space, the way the bookmark is used from the previously laid down cameras, combines the cleaning operations of the blasted mass and smoking the bottom from the suspended shelf, and also increases the safety of work due to the fact that the suspended shelves rest on the tab and fastening racks between the shelf and the roof are possible.

Claims (2)

Invention Formula The method of working out between the chamber pillars from the bottom upwards under the protection of the suspension shelf, including drilling and blasting operations, fixing the cleaning space, delivering the mineral and laying the exhausted space, characterized in that, in order to increase productivity and safety, drilling and blasting and roof mounting are made from the ground a regiment that has the shape of an isosceles triangle in cross-section and is pointing apex downwards, the broken rock mass is moved inside the regiment, from where it is transported to tavochnym in the processing and after the pre-lifting the shelf it is lowered to the tab, zapolnivschuyu out space under it. Sources of information taken into account in the examination: I. Borisenko S. G. and others. The chamber is a development system in the mining industry. M., 1960, p. 133-136. 2. USSR author's certificate 1 163141 cl. E 21 s 41/04, 196. FIG. one , mis / jj ffi ff / f ff // / // / t n3 / v Ni..i. .,. P-, I p .; If .i-h / U afut t - -