The way the control panel lining

 

(57) Abstract:

The invention relates to the mining industry and can be used when developing a powerful steep coal seams. Technical problem - positioning panel overlap relative to the base, and improving the safety of mining operations under the lining. The way control panel support includes a sequential blasting coal and separate landing grounds and shield overlaps due prispuskayutsya rocks. Panel ceilings have guides with installed sliders and stops. Determine the position of the slide relative to the stop nearest to the soil layer, and produce the breaking of coal from the roof of the reservoir with landing panel overlap when L<1/2h, or produce the breaking of coal in the soil layer with landing grounds at L>1/2h, where L is the measured distance from the stop to slide, m; h - full stroke of the RAM, m 2 Il.

The invention relates to the mining industry and can be used when developing a powerful steep coal seams.

Known way to control a shield unit.with. USSR N 675189 E 21 D 19/02, publ. 25.07.79, including a nomination at the bottom of the base beams, pulling up to her sections of the first overlap raise each of the rows of supporting legs for the passage of the mining machine and put them all the way to the bottom after excavation underneath the coal.

The disadvantage of this method is that it is based on conveyorcontrol recess, which has a limitation caused by the resistance of the coal cutting, and cannot be applied on solid coal or rock formations with inclusions.

In addition, when the recess conveyorcontrol packs of coal from the roof of the reservoir in the shield lining occurs the moment of forces, which is determined, on the one hand, the resulting force from the load collapsed rocks, on the other hand, the effort of a number of legs closest to the soil layer. As a result of this moment of forces can occur reversal of the shields around the axis, conventionally passing through the contact point of the average number of legs with a shield overlap. While the gap between the ski and the soil reservoir is filled with rock, which leads to emergency slaughter.

To reduce the moment of forces is possible by removing the thrust of the hydraulic jacks in soil formation. However, the entire load is transmitted to the average number of legs that can cause them landing "dry". It also leads to emergency slaughter.

The closest in technical essence and the achieved result for the proposed solution is the way to control shch panel overlap equipped with the guide installed it slide and stops for limiting the stroke of the slider, and the slider has the ability to move between stops to limit the stroke of the slide when planting shield lining. The method includes sequentially the breaking of coal from the roof of the reservoir and landing panel overlap, transportation of coal, the breaking of coal in soil formation and landing grounds, transportation of coal.

The disadvantage of this method is that the section alignment is required to determine the current position of the panel overlap relative to the base, and then conduct the blasting of coal from the roof of the reservoir with simultaneous planting panel overlap or soil formation for landing grounds. Determining the current position of the panel overlapping the slide associated with the shifting cylinder having a variable length, is difficult, because every time you need to take into account the departure of the stock, which happens to be different. Positioning panel overlap relative to the base by means of measuring the rotation angle of the support stands made difficult because the lower part of the reason you want to install additional measuring elements, in Otbo overlap can lead to an emergency situation in the face.

The technical problem of the invention is to improve the safety of mining operations under the lining of the position panel overlap relative to the base by measuring the distance between the slider and the stop for limiting the stroke of the RAM.

This objective is achieved in that in the method the control panel supports, each section of which consists of a base panel overlap, provided with the guide installed it slide and stops for limiting the stroke of the slider, and the slider has the ability to move between stops to limit the stroke of the slide when planting shield roof support, comprising sequentially the breaking of coal from the roof of the reservoir and landing panel overlap, transportation of coal, the breaking of coal in soil formation and landing grounds, transportation of coal, according to the invention, after each planting shield lining measure the distance between the slider pivotally connected with the base plate, and a stop for limiting the stroke of the slide closest to the soil layer, produce the breaking of coal from the roof of the reservoir and landing panel overlap when L < 1/2h and L > 1/2h produce the breaking of coal in soil formation and landing grounds, where L is the measured distance from upoa by measuring the distance from the slide to a stop for limiting the stroke of the slide quickly and accurately determine the current position of the panel overlap relative to the base, that excludes landing panel overlap when the minimum angle of the mortar lining and landing grounds at the maximum angle of the mortar lining and as a consequence, leads to increasing the safety of mining operations under it.

The essence of the technical solution is illustrated by the example of a specific implementation and drawings. In Fig. 1 shows the position of the support, in which the slider is in the left end position, i.e., L > 1/2h, and which produce the breaking of coal from the roof of the reservoir with a simultaneous fit of the base; Fig. 2 - the position of the support, in which the slider is in the right end position, i.e., L < 1/2h, and wherein the recess of the coal produced in the soil layer with simultaneous planting panel overlap.

The support consists of separate sections, each of which includes a panel overlay 1, which strengthened lugs 2 and 3 to limit the stroke of the slide guide 4, slide 5. The latter pivotally connected to the coupler 6, the second end of which is hinged to surround the support 7, placed on the back of the base 8. The front part of the base 8 is pivotally connected with a shield overlap 1 leg supports 9.

In the initial position of the panel overlap 1 operator the slider 5 is in the left end position. Make blasting drilling and blasting method of the upper stack of coal along the entire length of the lining and landing panel lining on the roof and the soil layer under the influence of collapsed rocks behind repulsed by coal. As the stack of broken coal may have a different power, and the panel overlap 1 in order to reach contact with coal as a whole, should move to a different step landing: where has destroyed more coal at a higher step of the landing, where less less. Due to this the lining adapts to the newly formed surface line of the face. When this starts to work the slide 5 mounted for movement along the guide 4 between the lugs 2, 3 for limiting the stroke of the slide and pivotally connected by a coupler 6 with the base 8. According to the new position of the slide 5 on the stop 3 to limit the stroke of the slide closest to the soil reservoir, determine the distance L. If the slide 5 is located at the focus 2 to limit the stroke of the slide, the distance L > 1/2h and make re-breaking of coal from the roof of the reservoir with simultaneous planting panel ceilings 1. Then the delivery tool (scraper installation) produce transportation of coal along the face in opesuse furnace (Fig. not shown). If rumbled the soil layer with simultaneous planting base 8. When this shield, the shield is moved only by the soil layer to contact the base 8 with carbon array. The slide 5 is the left extreme position. The broken coal is transported in uhlenbusch oven. The support goes into the initial position. The cycle repeats itself works.

Proposed method of control panel lining not only provides positioning panel overlap relative to the base, which increases the safety of mining operations under the lining, but allows depending on the mutual position of panel overlap and the base of each section to selectively produce blasting, which reduces the cycle time of the work under shield lining.

The way the control panel lining, comprising sequentially the breaking of coal, separate landing grounds and shield overlaps due pripuskalasya rock, with panel overlap is equipped with guides with installed sliders and stops, characterized in that the determined position of the RAM relative to the stop nearest to the soil layer, and produce the breaking of coal from the roof of the reservoir with landing overlap when L < 1/2h or breaking of coal in the soil layer with landing grounds at L > 1/2h, where L is ismaren

 

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