SU1439241A1 - Method of mining thick gently sloping beds - Google Patents

Abstract

The invention relates to mining and m. applied in the development of reservoir deposits of minerals chamber-and-pillar system development. The purpose of the invention is to reduce coal losses and increase the safety of cleaning operations. In the excavation field between the geological disturbances, the tunneling machine conducts two transport drifts 1, 2 along the upper and lower layers, knocked together by the troughs 3 and the ventilation drift 4. The coal is removed by two excavation layers. The chambers in the adjacent layers pass in a checkerboard pattern, with the chambers of the lower layer passing between the chamber pillars of the upper layer. The chambers of the upper and lower layers are interconnected by inclined slopes and connected to the drift 4 in the upper and lower parts thereof. The mining of the layers was carried out simultaneously with the advance of the coal extraction along the upper layer. The development of interchamber pillars is carried out by a reverse stroke of the combine. 2 hp f-ly, 5 ill. (L

Description

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The invention relates to mining and can be applied in the development of stratal deposits of minerals chamber-and-pillar system development.

The purpose of the invention is to reduce coal losses and increase the safety of cleaning operations.

FIG. depicts an example of the implementation of the method of mining a powerful flat reservoir with chambers with coal excavation with tunneling machines; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1, the position before planting waste chambers; figure 4 is the same position after landing waste chambers; Fig. 3 is a plan with a mounting scheme during the extraction of the upper inter-chamber pillar ().

The method is carried out as follows.

In order to prepare for the extraction of reserves between geological disturbances, the tunneling machines pass along the faults 1-2 on the upper and lower layers, knocked together through 50-70 m with inclined beams 3 and the ventilation drift 4. The fastening of drifts can taken annular, arched or trapezoidal, depending on the specific geological conditions of the reservoir under development.

Transport drifts are equipped with conveyors for transporting coal and a ventilation drift - by rail for the delivery of materials.

Ventilation of workings during their holding, as well as the chambers is carried out by local ventilation fans. At the same time, the outgoing jet from the chambers of the lower or upper layers is guided through the slots 5 through the temporarily left chambers of the lower and upper layers and further to the ventilation drift.

Delivery of materials is carried out from the ventilation drift along the left, temporarily, chambers of the lower or upper layer through the inclined glades and into the operating chamber.

After completion of the passage of ventilation and transport drifts by one combine, the first chamber No. 1 passes through the upper layer. The harvester is distilled to the nick in the new chamber No. 25, the support in chamber No. 1

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is reinforced by placing under the middle of the tops of the lining grabs 6 on two or three racks and, if necessary, piercing the organ lining. Another combine passes camera No. 1, which, after 10-15 m, is knocked down by inclined tracks with chamber No. Ig, subsequently with the remaining gallery of the previous camera of the upper layer.

With a lag of 10–15 m, chamber No. 2 simultaneously passes through 10–15 m, as it moves, it is knocked down by the glades with chamber No. C, through which materials are fed into the chamber.

After chambers nos. 1 and 2 break onto the ventilation drift, the combine in chamber nr 2g is distilled 5–6 m from the bottom. Pickups are installed, the racks are removed and the harvester is hacked into the rear sight 11, destroying it with 3-4 m wide stoppers. Coal can be released into chamber K 1 (where the combine is loaded onto a conveyor or loaded onto a conveyor in chamber K-2g. frame support is erected, consisting of a top, one end of which is placed in the middle pickup, and a stand is placed under the other. It is possible to mount the bare roof with anchors. After the coal is removed in the step, the harvester is distilled into the next one chambers - 2g is installed reinforcement lining 6. The harvester in chamber No. C is also driven back by 3-5 m for loading coal from the next stope along the upper rear sight. Thus, the upper inter-chamber rear sight is taken up by 80-90%. After that the harvester is distilled and cut into 8-10 m into new chambers nos. 2 and 3g. At 2-5 m from the bottom of the chamber K 2 c to the chambers of the upper layer K K 2 f, and 3 g, inclined glades are punched. Then, in the waste chambers, the roof is planted the way that cell number 2 remains

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empty galleries.

Claims (4)

1. A method of testing powerful flat seams, including carrying out ventilation and transport drifts in the extraction field, excavation of coal chambers using tunneling machines followed by working off inter-chamber pillars with the return stroke of a combine, characterized in that, in order to reduce coal losses and increase the safety of cleaning operations, coal excavation is performed by two excavation layers, chambers in adjacent excavation layers pass into staggered order, with the chambers of the lower layer passing under the inter-chamber pillars of the upper layer, while the chambers of the upper and lower layers are interconnected sloping glades, and the mining of these layers is carried out simultaneously with the advance of coal mining along the upper layer. 2. Method pop. 1, which differs from the fact that two transport and one ventilation workings are carried out in the excavation field. 3. The method according to claims 1 and 2, about t and which is due to the fact that the chambers of the upper and lower layers are connected with ventilation development in the upper and lower parts, respectively. hh  / / / l HM, 5V / -XM at Y // V2w ./. FIG. J / / 2 „ Phage.L Р5ШД rr  with l U tp 13 one X / S I2j 12  . ng r-ff I I IG) Yak L V Shg ITXJ Jj 13 t} 4.J . five U17 0 ( .. : 2a  g, one 13th one but Jj X / . R Jxll IG) D ITXJ,  / TP Shg .Ti ± r whether C + ULL I + i sh