Method for panel ventilation in panel-block preparation system

FIELD: mining.

SUBSTANCE: method includes air supply from main mines along panel transport mines to block transport mines to areas of mining works and removal of spent air from bottom hole through split chambers in block ventilation mines to panel ventilation mines further to main ventilation mines, at the same time part of spent air from panel ventilation mines through blocks, where treatment works are not carried out, recirculates to block ventilation and split mines, and also through block transport mines, to panel transport mines with the help of additional recirculating ventilation plants located on panel and block mines, where mining works are not carried out.

EFFECT: lower risk of contaminated air accumulation in mined-out space, provision of stable microclimate in areas of mining works and reduced costs for ventilation.

1 dwg

 

The invention relates to the mining industry and can be used for ventilation of the panel when the panel-block preparation system.

There is a method of ventilation of the mine, including air flow in the ventilation network of the mine's ventilation unit, at which air is sent for reuse in the ventilation network of the mine, which used a ventilation unit located inside the mine (U.S. Pat. 2119060 RF, MPK8E21F 1/00, publ. 20 09.1998).

The disadvantage of this method is the close location of the main fan installations and recirculation sboc, through which the partial direction of exhaust air for reuse. As a result, after these breakthrough there are leaks, and to the borders of a mine field, where the mining operation is underway, not receiving enough fresh air.

To eliminate this disadvantage will allow placement in these zboyco additional recirculation installations. As a result of their work will be eliminated leaks. However, due to the proximity of sbec with the main fan extra recirculation setting will work with low economic efficiency. This is because the recirculation fan system will work in protionamide with the main ve is tiscornia installation.

The known method of panel block preparation of a layer with blocks, working from the border of the panel to the main transport and ventilation drifts. In this scheme of ventilation includes panel ventilation drifts along the Central axis of the panel near the panel transportation roadway, block excavation-transport and ventilation drifts. The ventilation panel is to supply fresh air from the main travel roads on panel block transport workings to wastewater treatment stub and split cells, in a dead-end chamber air is supplied through local ventilation fans (VMP). From a dead-end block excavations exhaust air is removed through the cutting chamber at block ventilation workings panel ventilation elaborate further on the main vent production and ventilation shafts (Methodological guide to mining in the mines of the Verkhnekamskoe potash Deposit. / UV VNIIG. - M., Nedra, 1992. - P.56-57).

The disadvantage of this method is low efficiency and high cost of ventilation due to the accumulation of polluted air due to laminar motion of an air jet in the ways of leaks.

The technical result of the invention is to reduce the risk of accumulation zagryaznennogo the air (gas) in the exhaust space due to the turbulence of the air flow and, accordingly, to provide a stable comfortable microclimate in the areas of mining, as well as reducing costs for ventilation.

This technical result is achieved in that in the method of ventilation of the panel when the panel-block preparation system, including the air supply from the main travel roads for transport panel workings on the transport block generation to the mining and removal of used air from the bottom through the split camera on the block ventilation workings panel ventilation generation and next to the main vent production, with exhaust air from the panel ventilation openings through the blocks that are not being cleaned up, recycle on the block ventilation and split production, as well as through the transport block generation on the transport panel production with additional recirculation fan installations placed on the panel and block excavations, in which no mining operation is underway.

The essence of the technical solution is illustrated in the drawing, which is shown in the scheme of movement of air.

In the drawing: 1 - the main transport production (TLG); 2 - the main haulage tunnel (GOV); 3 - main ventilation generation (GW); 4 - panel transport production (PTV); 5 - panel haulage generation (PHS), 6 - panel ventilation you is abode (UIP); 7 - transport block generation (BTV), 8 - block haulage generation (BOV); 9 - block ventilation generation (BVV); 10 - split production (PB); 11 - treatment formulation (S); 12 - fan local ventilation (VMP); 13 - direction of mining; 14 - the direction of movement of fresh air; 15 - the direction of exhaust air; 16 - ventilation jumper, 17 - additional recirculation fan.

The method is as follows.

For ventilation of mine workings in the prepared blocks fresh air 14 from the main ventilation unit on 2 main haulage and transport 1 workings enters the transport block 7 production and next to mining in sewage generation 11 using local ventilation fan 12.

After airing sewage treatment works in mine workings, waste (contaminated) air is removed from the bottom through the cutting chamber 10. He further goes on block 9 and panel 6 vent production to the main ventilation workings 3 using the main ventilation unit (figure 1). Space mining and education waste (contaminated) air gradually, with the front of the treatment works, move the unit and the panel. Local ventilation fans move the together with the movement of the front of the sewage treatment works.

To improve ventilation longwall mining panel and block excavations, in which no mining operation is underway, additional post-recirculating ventilation unit 17 who work in cocurrent flow with the main fan installation. They are either in the area of the coupling block the ventilation generation 9 panel with ventilation generation 6 or in the region of the mating panel transport framing and panel cleaning elaboration 5. If it is one part of the exhaust air 15 going on panel ventilation elaboration 6 at the main vent production 3. The other part of air (recirculating air) due to the depression created additional recirculation fan installation 17, will go through the blocks in which no mining operation is underway, block the ventilation generation 9, split development 10, block transport development 7 on the transport panel production 4, where the recirculated air is mixed with fresh air stream. Recirculated air carries out the described movement due to the depression created recirculation fan installation 17.

To determine the location and type of fan recirculation fan installation determine the qualitative composition of the air coming out of istih workings, and concentration of pollutants in it. Based on these data, determine the amount of air that must be sent for recycling. By a special technique, which is the know-how of the present invention, expect air volume and location of fans to ensure adequate ventilation treatment workings.

Regulation of the quantity of recirculation air is carried out using a main fan installation (changing its performance), regulatory jumpers, recirculation fan installation (changing its performance) or a combination of these means.

It should be noted that the movement of air through the panel haulage formulation 5 can be either from the start panel to its borders and further panel ventilation workings, and from the borders of the panel to its beginning. In either case, to create directional airflow, you must use regulatory jumper 16.

Successful tests of this method were in the potash mine Verkhnekamsk potassium-magnesium salts.

The use of the invention reduces the risk of accumulation of polluted air (gas) in the exhaust space due to the turbulence of the air flow, respectively, provides a stable microclimate in place the mining operations and reduces the cost of airing due to the co operation of the fan units and reduce the complexity of work to erect and dismantle regulatory jumpers and reduce air leakage.

Method of ventilation of the panel when the panel-block preparation system, including the air supply from the main travel roads for transport panel workings on the transport block generation to the mining and removal of used air from the bottom through the split camera on the block ventilation workings panel ventilation generation and next to the main vent of development by means of the main ventilation unit, characterized in that the part of the air panel-ventilation openings through the block ventilation and split production, as well as through the transport block generation, which is not being cleaned up, recycle panel on transport development by means of the additional recirculation fan units installed in blocks in which no mining operation is underway.



 

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