Method for constructing artificial supports during extraction of steep beds

FIELD: mining industry.

SUBSTANCE: method includes erection of rows of main platforms along bed length in staggered order with length equal or divisible by step value for support displacement, and placing filling material thereon. Along length of main platforms between ceiling and bed soil post support is mounted, upon which filling material is fed. After that between main platforms additional platforms are erected with wedge supporting, and main platforms are rotated counter-clockwise towards pneumatic support and it is displaced for one drive step. During that filling material, while lowering, unwedges wedge support between ceiling and bed soil and forms artificial supports. After that additional platforms are rotated counter-clockwise towards pneumatic support. After movement of cleaning face for two drive steps operations for constructing artificial supports are repeated. Distance between main platforms along bed fall line are selected from mathematical expression.

EFFECT: higher efficiency.

2 dwg

 

The present invention relates to the field of mining and can be used to control the roof during the mining of steep seams.

A known method of construction of the artificial supports for the development of steep seams, which includes the construction of bases along the strike of the seam, for all its power and laying the backfill material on the base, which is erected in a checkerboard pattern, with backfill material placed by its gravitational movement of the overlying to underlying basis to education at all bases of the pyramids of backfill material /Ovcharenko CENTURY Technological processes of extraction of coal seams without the constant presence of people in a mining face. (Tutorial). L., 1990, p.74-75.

However, excavation of the coal miner and the location of the line stope parallel to the line of fall of the reservoir harvester constantly departs from the line stope that violates the schema shifting pneumography and thereby the construction of artificial supports in a checkerboard pattern. In this connection there is a necessity of the slope of a line stope to the line of fall of the reservoir (i.e. the diagonal line stope).

A known method of construction of the artificial supports for the development of steep seams, including the construction of a series of decks along the strike of the seam in a checkerboard pattern and ukladka them backfill material, this flooring erect length equal to or a multiple of the step size of the movement of the support, with a gap between the roof of the reservoir, the smaller size lumpy backfill material, and simultaneously with the laying of backfill material the bottom of the base to hold the ropes, and the top move under the weight of backfill material against the roof of the reservoir, after which the rope is extracted, and the tab and removing the ropes operate behind the lines stope on one row (Patent 2147687, 98).

However, excavation of the coal miner and the location of the line stope parallel to the line of fall of the reservoir harvester constantly departs from the line stope that violates the schema shifting of pneumography and thereby the construction of artificial supports in a checkerboard pattern. In this connection there is a necessity of the slope of a line stope to the line of fall of the reservoir (i.e. the diagonal line stope).

The present invention is the construction of artificial supports in developed space when the slope of a line stope to the line of fall of the layer.

The task is solved in that in the method of construction of the artificial supports for the development of steep seams, including the construction of a series of the main flooring along the strike of the seam in a checkerboard pattern with a length equal to or a multiple of the amount the e step of moving the support, and laying on them filling material according to the invention, the length of the main deck between the roof and the ground layer are installing a rack support, which serves backfill material, after which erect additional decks with wedge support between the main and main decks are deploying counter-clockwise to pneumography and move her to step zagadki, with backfill material, falling, rasklinivanie klinovuyu the lining between the roof and the ground layer, creating an artificial basis, then additional decks deploy counterclockwise to pneumography and after podvigina stope on the two step Zachodni operations construction artificial supports repeat, and the distance ″b″ between the main flooring along the line of fall of the layer is chosen from the relation:

where l is the length of the deck, m;

α - the angle between the line stope and line stretch seam, hail.

The invention is illustrated by drawings, where figure 1 shows the General layout of pneumography relative to the line stope and rock pillars in the initial period. Figure 2 shows the layout of pneumography relative to the line stope, rock supports and decking after shifting pneumography to step zagadki.

The method of construction of the suit of the public supports is as follows: in the initial position line stope 1 is inclined to the line of fall of the reservoir at an angle of 10-12 degrees. Pneumograph have 2 parallel to the stope 1. For landslide near pneumography erect main decking 3 length l equal to the width ″r″ capture excavation organ harvester 4, and the distance ″b″ between decks on the line of fall of the layer is chosen from the relation

where l is the length of the deck, m;

α - the slope of the line stope to the line of strike of the formation, hail.

Then the length of the main deck 3 erect rack support 5 and the ventilation passage 6 serves backfill material 7 on the rack support 5 mounted at the top of the main deck 3, the filling material 7, falling from the rack supports 5 installed at the top of the main deck 3, is fed to the downstream rack support 5 and so on until the haulage drift 8. Then between the main decks 3 erect additional decks 9 and stack them klinovuyu the support 10, and the main decks 3 deploy counterclockwise to pneumography 2 and have them parallel to the rows of pneumography (see figure 2).

After removing the strip of coal combine 4 throughout the length of the stope 1 harvester using the winch 11 installed in the ventilation passage 6, lower haulage drift 8 (Fig 2), and the ranks of pneumography 2 move to step Zachodni ″r=l″. Backfill material 7, sipas with stoen the th lining 5, will get on klinovuyu the support 10, is installed on additional platforms 9, rasklinila between the roof and the ground layer klinovuyu shoring, forming staggered rock support 12 in the form of truncated pyramids. Then deploy additional decks 9 counterclockwise to pneumography 2. After removal of the second strip of coal throughout the length of the stope, the descent of the Shearer to the haulage drift, move pneumography two step operation on the construction of the main decks, installation of the rack supports, the flow of filling material on the rack shoring, erecting additional decks with wedge support and shifting of the rows of supports repeat.

This method will allow you to effectively manage the roof with the slope of the line stope, to the line of fall of the layer.

The method of construction of the artificial supports for the development of steep seams, including the construction of a series of the main flooring along the strike of the seam in a checkerboard pattern with a length equal to or a multiple of the magnitude of the step of moving the support, and laying on them backfill material, characterized in that the length of the main deck between the roof and the ground layer are installing a rack support, which serves backfill material, and then between the main decks erect additional decks with wedge support, and the main decks of Rasbora the more counterclockwise to pneumography and move her to step zagadki, this backfill material falling rasklinivanie klinovuyu the lining between the roof and the ground layer and forms an artificial support, after which additional decks deploy counterclockwise to pneumography and after podvigina stope on the two step Zachodni operations for the construction of artificial supports repeat, and the distance ″″ between the main flooring along the line of fall of the layer is chosen from the relation

where- length deck, m

α - the angle between the line stope and line stretch seam, hail.



 

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