SU1629552A1 - Winning system for thick seams - Google Patents

Abstract

The invention relates to mining, in particular to separating interlayer overlaps, and is used in the development of thick seams. The goal is to increase reliability while reducing the cost and complexity of the work. The device includes even 1 and odd 2 skis, the rear ends of which are laid on the overlap 3 AA. lining sections (SC) of the lower ledge. The front ends of one skis, for example, even ones, are connected through one groups for the width of the upper ledge of the upper ledge with 5 to the transverse beams 6 of the lower bases 7 of the upper 4 of the upper ledge, and others to the base beam 8 through the intermediate bases 9. Each ski 1,2 from box-shaped beams, nested inside one another and interconnected by spacers with the possibility of moving the beams relative to each other. Spacers are made with ledges that come into contact with the grips on the beams when diluting them, sleeves when supplying fluid to them. Hoses are placed inside the beams. 1.2 interlayer overlap. To do this, unload the central hydraulic pillar 11 and reduce the height of the skis 1.2 and move the conveyor 12 with the jacks 13. Reduce the height of the skis 1.2 by connecting the sleeves to the drain line. 3 il. I (L se yu ate joint venture to

Description

The invention relates to mining, in particular to separating interlayer ceilings used in the development of thick seams, and can be used in the coal and mining industries.

The aim of the invention is to increase reliability with a simultaneous reduction in the cost and labor intensity of the work.

FIG. 1 shows the layout of the equipment; in fig. 2 shows section A-A in FIG. one; in fig. 3 - ski scheme.

The device consists of even 1 and odd 2 skis, the rear ends of which lie freely on the overlap of the 3 subsiding layers (lower ledge), the front ends of one skis, for example, even, (Fig 1) through one group in the width of section 4 of the lining installation slr ( upper ledge) are attached by means of 5 to the transverse beams 6 of the lower bases 7 sections of the fixture 4 of the screed layer, and others to the base beam 8 through intermediate bases 9. Intermediate bases 9 with the central lower support 10 and hydroresistant 11 are connected to the base beam 8 conveyor 12 shirnirno and Attach to the transverse beams 6 of the lower base 7 by means of jacks 13 advancing.

Each ski 1,2 consists of (fig. 3) i-balls 14 and 15 of box-section, nested inside one another and interconnected by spacers 16 with the possibility of moving the beams relative to each other normal to the soil of the slashing layer. Moreover, the spacers 16 are made with protrusions 17 and 18 that come into contact with grippers, respectively, 19 and 20, on beams 14 and 15, when diluted by shells-sleeves 21 when liquid is fed into them. Shell sleeves 21 are placed inside the contour of the beams 14 and 15. The shell sleeves 21 are connected by hoses 22 (FIG. 3) to the distributor 23. The lower beams 14 are provided with guide ribs 24 on the soil side.

The device works as follows.

In the working position, the even and odd skis 1 and 2 are in the Unfolded position. In this position, the beams 14 are pressed by shells 21, into which they are pumped under pressure

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bone, to the soil of the installation layer, and beams 15 are lifted to the upper extreme position. ,

The fluid overpressure in the sheaths of the sleeves 21 is balanced by the pressure of the overlying rocks and the interaction of the grippers 19 and 20 of the beams 14 and 15 with the protrusions 17 and 18 of the spacers 16 (Fig. 3). The liquid is supplied to the sleeves 21 from the pump unit through the distributor 23 and hoses 22. As the bottom layers of the installation layer and the slash layers move, there is a need to move the conveyor 12, supports 3 and 4 (Fig. 1.2) and skis 1 and 2 interlayer overlap . For this, the conveyor 13 is pushed through the jacks 13 to the face. This operation is preceded by preparatory operations for unloading the central hydraulic column 11 mounted on the lower central support 10 of the intermediate base 9 (Fig. 1) s and reducing the height of the skis connected by traction 5 with the intermediate base 9. Reducing the height of the skis is accomplished by communicating the sleeves 2 to the drain line. The fluid from the sleeves 21 under the action of the weight of the beams 15 and part of the collapsed rocks is displaced into the drain line. Due to the fact that a certain equilibrium of broken rocks is formed above the lower skis, the pressure of the rocks from this roof on these skis is reduced, and it is possible to move them to the bottom of the shifter 13. At the same time, adjacent skis, large in height, are perceived by the majority of the weight of the collapsed rocks. The movement is carried out in sections. When shifting, the rear ends of the skis slide along the upper overlap of the lining of 3 subsiding layers. In the interface zone above the bottom of the undercut, the skis, which are large in height, experience bending stresses within elastic limits and there are deflections. Movable skis, however, are lower in height in the unloaded zone and have no noticeable deflections, which makes it possible to move them. After the skis connected via the intermediate bases 9 to the base beam 8 are moved, their original height is restored by feeding the hose 21 with the fluid under pressure.

Then, adjacent skis are lowered in height, connected by means of 5 with a transverse beam 6 of the lower base of the support sections of the mounting layer. The shift is carried out together with the support section, the jack 13 at the moment when the central hydraulic post 11 is in the Rasperto position.

After moving adjacent skis, they are restored in height. Then the cycle repeats. The support 3 of the undercut layer is moved independently of the support of the installation layer by the interval of the sections of the support of the lower ledge, and the front ends of the even sections are connected to the base, which is connected with the purpose of increasing the reliability of work and reducing the labor intensity of the odd sections. the bases of the sections, the supports of the upper ledge, which are connected to the base by means of shifters, and the sections of the inter-word dividing floor are made in the form of telescopic ducts made of one D-shaped box beams sectional

Claims (1)

la overlap with the ends of the skis 1 and 2 top- 15 whose bottoms are deployed in the opposite base of the lining 3. Invention formula the positive directions and the side walls are made with clamps, partitions installed between the side walls of the beams and made with stops for engagement with the grips, and the shells installed inside the telescopic ducts and connected to the pressure and drain lines. Extraction complex for excavation of thick layers, including lining sections 20 of the upper and lower benches, having bases and ceilings, and sections of the interlayer dividing slab, the rear ends of which are laid on the ceiling 25 The bottoms of which are deployed in the positive directions and the side walls are made with clamps, partitions installed between the side walls of the beams and made with stops for engagement with the grips, and the shells installed inside the telescopic ducts and communicated with the pressure and drain lines. b 7 9 Yu 5 / I / I ,12 T &