SU827789A1 - Method of working thick sloping coal seams - Google Patents

Description

one

The invention relates to the mining industry and can be used in the development of powerful steep coal seams.

There is a method of developing powerful steep coal seams, which includes carrying out preparatory workings and mining the reservoir in horizontal layers in a descending order with hardening laying of the open space 1.

There is also known a method of developing thick steep coal seams, which includes carrying out preparatory workings, mining the reservoir with horizontal layers in a descending order of stripes along the strike with strip grooves alternately with the latter shifting relative to each other by half the height of the strip and laying the space of each strip simultaneously with groove adjacent strip in the same direction and ahead of the groove above the tab 2.

However, both of these methods are characterized by the mutual influence of work on laying and excavation, as well as considerable labor-intensiveness of backfilling.

The purpose of the present invention is to eliminate these drawbacks.

This goal is achieved by leaving a coal in each strip on the side of the adjacent strip to leave a temporary pillar of coal, which is extracted in the direction coinciding with the direction of the excavation and lagging behind the filling works in the adjacent strip as the bookmark hardens in it, This after working out the strip from it to the array

coal adjacent to the strip to be drilled horizontal wells drilled.

FIG. 1 shows a strip mining scheme at the lateral side of the formation; in fig. 2 - section A-A of FIG. I; in fig. 3 -

a well drilling pattern from a waste strip; in fig. 4 - section bb FIG. 3; in fig. 5 is a diagram of mining the strip at the side of the formation.

The method is as follows. The powerful steep coal seam is worked out after the complex of development workings is carried out with horizontal layers in a descending order. The coal is dredged in strips I, 2 along the strike.

with the notch of the strips alternately with their displacement relative to each other by half the height of the strip. Simultaneously with the excavation of coal in lane 1 and in the same direction, the adjacent lane 2 is laid.

hardening material 3, while the cleaning work ahead of work on the tab. The excavation is carried out by the excavation harvester 4 with the transportation of the broken coal by the self-propelled vehicle 5. The bookmark is made by a special self-propelled filling aggregate 6. When the coal is excavated, in each lane from the side of the adjacent lining strip leave a whole rear sight of 7 angles. The specified rear sight is removed as the bookmark hardens in the direction coinciding with the direction of coal extraction in the strip and lagging behind the backfilling works in the adjacent strip. After the strip 1 has been developed, horizontal wells 10 are drilled into the array of coal 8 adjacent to the strip 9 to be developed. These wells are designed to allow the air flow to pass through the strip 9 through the rear sight 11. In a subsequent operation, it is repeated.

f o rm u la izo b

The method was developed with powerful steep coal seams, including preparatory workings, mining the reservoir with horizontal layers in a descending order of stripes along the strike with strip grooves alternately with the latter shifting relative to each other by half the strip height and laying the developed space of each strip simultaneously with the groove of the adjacent strip in the same direction and ahead of the excavation above the bookmark, characterized in that, in order to separate

cleaning and backfilling works and reducing the labor intensity of backfilling works, when coal is excavated in each lane, a temporary coal pillar is left at the side of the adjacent paving line, which is removed in the direction coinciding with the direction of the recess and lagging behind the backfilling work in the adjacent lane as the bookmark hardens in it, while after working the strip from it into

coal adjacent to the strip to be drilled horizontal wells drilled.

Sources of information taken into account in the examination

1. USSR author's certificate number 673735, cl. E 21S 41/04, 1977.

2. USSR author's certificate number 690185, cl. E 21S 41/04, 1978.

A 8

 // v7 / x v / x; // lv // ssk y //; w / XY // /T..h v / lvl w

/ / /

fl / g. / Aa

Do u

-S

/

4 A4VA4V / 4VAV.

/ 5 - fig.Z.

w ff-ff

W 5

 .

Claims (1)

Claim A method for developing powerful steep coal seams, including conducting preparatory workings, developing the seam in horizontal layers in descending order by strips along the stripe with a notch of strips, alternately shifting the latter relative to each other by half the height of the stripe and laying the worked out space of each stripe simultaneously with excavating the adjacent stripe in the same direction and ahead of the recess above the bookmark, characterized in that, in order to separate 10 treatment and filling works and reduce labor the bones of the filling work, when coal is removed in each strip from the side of the adjacent laying strip, a temporary pillar of coal is left, which is removed in the direction coinciding with the direction of the excavation, and lagging behind the laying work in the adjacent strip as the bookmark hardens in it, while after mining the strip from it to the coal array 20 of the adjacent strip to be mined, horizontal wells are drilled.