Method for dust and gas removal from stope ore

FIELD: mining.

SUBSTANCE: method consists in clean air supply into the bottom hole and removal of contaminated air from the bottomhole zone. In this respect, the configurations of circulating air swirling motion are built up. For this purpose, the worn chambers are broken into the airway. In this respect, the additional draft source, mounted in the worn chamber, is aligned for work in direction to the airway, and the mix of fresh air with the airflow contaminated with dust and gas is removed through the worn chamber and airway. In this respect, fresh air is directed to workable stope ore through the haulage roadway or by means of additionally installed ventilation draft source with air feeder, which end is placed in the working chamber, or by means of the adjusting airway stoppings, one of which is mounted on the haulage roadway on the way of air current motion between the working and worn chambers, and the other one is mounted at the mouth of worn chamber, placed in axial alignment with developed stope ore, which is gone away from it through the haulage roadway.

EFFECT: gain in air supply performance.

6 cl, 2 dwg

 

The invention relates to the mining industry and can be used for ventilation treatment, mostly stub, workings.

There is a method of natural ventilation stub mining large extent due to the circulation of the vortex motion (Krasnostein AU, feinburg GS Diffusion-network methods for calculating the ventilation of mines. / Ekaterinburg, 1992, ch.7, 7.1, p.148-164, RIS).

The disadvantage of this method is the lack of stimulation of ventilation along the entire length of the stub generation.

Closest to the proposed invention is a method of removing dust and gas from production while cleaning chamber-and-pillar system of mining, including the flow of clean air into the bottom zone of the source of thrust, creating a vortex circulation loop, one side of which is supplied with clean air, and on the other side - the removal of contaminated air from the bottom zone and critical zone place the source of thrust, which creates the first circuit circulation of the vortex motion and generates a directed flow of air contaminated by dust and gas along the walls of the excavation, opposite the jobs of miners, while at the connection point of the first circulation vortex loop with the following whirl the second circuit held the linkage, connecting clean production with waste chamber where installing an additional source of thrust, oriented to work in the direction of the ventilation passage, and which may be provided with a duct (patent No. 2392440 of the Russian Federation, publ. 20.06.2010, bull. No. 17).

The disadvantage of this method of dust removal and gas cleaning production is low efficiency control the air flow in the case where the used camera off the ventilation drifts block (BSC) or panel (PBS) with appropriate training system.

The technical result of the invention is to improve the effectiveness of ventilation by removing dust and gas from the cleaning formulation, in which people work, and the elimination of air leaks through the exhaust chamber, when the linkage with ventilation workings.

This technical result is achieved in that in the method of removing dust and gas from the cleaning formulation, including the flow of clean air into the bottom zone of the source of thrust, creating a vortex circulation loop, one side of which is supplied with clean air, and on the other side - the removal of contaminated air from the bottom zone, in which is placed a source of thrust that makes the first loop circulation vikhreva what about the movement, and form a directed flow of air contaminated by dust and gas along the walls of the excavation, opposite the jobs of miners, while at the connection point of the first circulation of a vortex loop with the following vortex contour are linkage connecting the clean production with waste chamber where installing an additional source of thrust with duct exhaust chamber off the ventilation drift, while an additional source of thrust, installed in the waste chamber, oriented to work in the direction of the ventilation passage, and a mixture of fresh air with a stream of air contaminated with dust and gas, are removed through the empty chamber and the vent passage, this fresh air is directed into the working clean production transport roadway or through an additional set of source ventilation traction with the duct, the end of which is located in the working chamber, or by means of regulating the ventilation of jumpers, one of which is installed on the transport passage along the path of movement of the air flow between the working and tested cameras, and another set at the mouth of the waste chamber located coaxially working on cleaning formulation, separated from her through the transport passage.

A ventilation passage formed by the ore of podvigina treatment works diagonal linkage of the cleaning formulation through an elaborate camera to the design contour of the ventilation drift, ensuring cross ventilation with subsequent formation ventilation drift until the next cleaning formulation. Form a directed flow of air with dust and gases include additional source of ventilation thrust, located in the waste chamber. Form a directed flow of the mixture of fresh air with the air flow, contaminated dust and gas, the inclusion of an additional source of ventilation thrust, located in the linkage between sewage generation and waste chamber and oriented to work in the direction of the ventilation drift. Additional sources of traction supply duct. The linkage between the exhaust chambers, and in the waste chamber, adjacent to longwall development, in the area between her mates with the transport passage and the linkage between the treatment formulation install ventilation jumper.

The essence of the invention is illustrated by drawings, where figure 1 - scheme of ventilation cleaning formulation (bottom zone stub generation), figure 2 - ventilation scheme longwall production at the breakthrough treatment workings between the formation of the ventilation drift.

In the figures denote: 1 - transport and drift; 2 - fresh air; 3 - mixture flows fresh and polluted air; 4 - jobs miners; 5 - linkage; 6 - directional flow of air with dust and gas (the first circuit); 7 - samochody the second carriage; 8 is a conveyor hopper; 9 - harvester; 10 - source of thrust; 11 - treatment development (stub generation); 12 - proven camera (through output); 13 - an additional source of thrust; 14 - duct; 15 - vent drift; 16 - source ventilation rod with duct; 17 - regulating ventilation jumpers, 18 - ventilation jumper.

The method is as follows.

From the mouth of the longwall 11 to generate breakthrough 5 fresh air reaches 2 as either due to mine the depression created by the fan of the main airing, and by regulating the ventilation jumpers 17, or by an additional source of thrust supplied by the duct 16, either through joint combinations regulating ventilation jumpers 17, an additional source of thrust supplied by the duct 16, and mine depression created a main fan installation.

Eliminating possible leakage of fresh air 2 transport passage 1 can be achieved either by setting the source vent rod with duct 16, such as local ventilation fan (VMP) with the duct, or by regulating the ventilation jumpers 17 that overlap the cross-section of the transport passage 1, and the waste chamber, the opposite of the treatment formulation. This one is of the jumper installed on the transport passage 1 through the path of movement of the air flow between the working 11 cleaning and waste cameras and may have a passage for people and traffic (for example, the door)and the other at the mouth of the waste chamber located coaxially working on cleaning formulation, separated from her through the transport passage. Thus the flow of fresh air 2 fully directed to the treatment formulation 11, bypassing where it leaks.

It is possible to avoid air leaks blend of the joint application of regulatory crosspieces 17 and local ventilation fan (VMP) with the duct 16.

In the area of the breakthrough 5 of the fresh air goes through the jobs of miners 4 to the bottom where the spring thrust 10 issued a directed flow of air with dust and gas 6 and generates a first circulation of the vortex path. The other part of the fresh air 2 together with the directional flow of air contaminated with dust and gas 6, enters the linkage between 5 longwall production 11 and the waste chamber 12. In the linkage 5 is a mixture of fresh air 2 with polluted stream 6 and dilution up to sanitary standards with hazardous components below the established norms in the total mixture 3.

To enhance the management of air exchange in the linkage between 5 longwall production 11 and the waste chamber 12 allows the use of an auxiliary source rod 13.

In the case when the sewage generation 11 straight off the ventilation passage 15 (Fig 1), additional East is CNIC rod 13, which may be provided with a duct 14, is installed in the waste chamber 12, is oriented to work in the direction to the vent develop and intensify the destruction through the linkage of the 5 mixture of air streams contaminated with dust and gas 6, and fresh air 2, the waste chamber 12 or through the duct 14 and further on the workings ventilation ventilation shaft.

If the ventilation passage 15 is formed due to the beating treatment openings 11, as podvigina treatment works diagonal linkage at the end of the cleaning formulation through an elaborate camera to the design contour of the ventilation drift (figure 2), the additional source rod 13 may be placed in the waste chamber 12 when the focus or direction of the ventilation drift (it can be equipped with a duct), and the area of the breakthrough between the exhaust chambers 5 are installed ventilation jumpers 18, which prevents the recirculation of the air flow in the exhaust chambers 12, or an additional source rod 13 (which can also be supplied the duct is installed in the linkage 5 and oriented to work in the direction from the cleaning formulation 11 in the side adjacent the waste chamber 12, in this case the jumpers 18 not need any additional source rod 13 without Vostokova is and placed in the linkage between 5 longwall production 11 and the waste chamber 12 and oriented to work in the direction from longwall production 11 used cameras 12 and establish regulatory ventilation jumper 17. Thus, if the fan 13 provided with a duct 14, the vent jumper 18 in the linkage between the exhaust chambers 12 and into the waste chamber 12 is not needed, and if the duct 14 is no, you need adjustable ventilation jumper 17 (figure 2).

The mixture of air flow 3 should workings ventilation ventilation shaft.

After sinking diagonal sboc and provide cross ventilation to form the vent passage to the design contour regular cleaning of production.

Aerodynamic parameters of the sources of thrust (VMP) 10, 13 and 16 with duct expect depending on mining conditions, the gas-bearing strata and used mining equipment. The auxiliary power supply rod 13 is placed in the waste chamber 12 or in the linkage of the 5 in a technologically convenient location, and it may be provided with a duct through which removes the contaminated air flow in the ventilation passage 15.

The expediency of application of regulatory jumper 17, its aerodynamic permeability, and the use of local ventilation fan (VMP) with the duct 16 and the depth of the plant's air duct to the treatment formulation 11 is determined by the gas-bearing layers and parameters of the equipment used.

The need to use and the lengths of the duct 14 is also determined by the calculation based on the gas-bearing layers and parameters used mining equipment.

Calculation methods sources of thrust 10, 13 and 16, and the length of the ducts and the depth of their plant production (cameras) are know-how of the invention.

On the potash mine conducted a successful test of the proposed method of ventilation.

The proposed method allows to intensify the ventilation in the mine workings at the junction of the circulation of the vortex paths in which there is a mixture of dust and gas clouds, as well as to eliminate leakage of fresh air in the transport drift. In addition, the proposed method of ventilation can improve sanitary and hygienic conditions of work miners.

1. Method of removing dust and gas from the cleaning formulation, including the flow of clean air into the bottom zone of the source of thrust, creating a vortex circulation loop, one side of which is supplied with clean air, and on the other side - the removal of contaminated air from the bottom zone, in which is placed a source of thrust that makes the first loop of the circulation of the vortex motion and forming a directed stream of air contaminated by dust and gas along the walls of the excavation, opposite the jobs of miners, while at the connection point of the first qi is colalongo vortex loop with the following vortex contour are linkage, connecting clean production with waste chamber where installing an additional source of thrust with the duct, wherein the exhaust chamber off the ventilation drift, while an additional source of thrust, installed in the waste chamber, oriented to work in the direction of the ventilation passage, and a mixture of fresh air with a stream of air contaminated with dust and gas, are removed through the empty chamber and the ventilation drift, while fresh air is directed into the working clean production transport roadway or through an additional set of source ventilation traction with the duct, the end of which is located in the working chamber, or by means of regulating ventilation jumpers, one of which is installed on the transport passage along the path of movement of the air flow between the working and tested cameras, and another set at the mouth of the waste chamber located coaxially working on cleaning formulation, separated from her through the transport passage.

2. The method according to claim 1, characterized in that additional sources of traction supply duct.

3. The method according to claim 1, wherein the ventilation passage is formed as podvigina treatment works diagonal linkage of the cleaning formulation through an elaborate camera to PR the flash circuit of the ventilation drift, ensuring cross ventilation with the subsequent formation of the ventilation drift until the next cleaning output.

4. The method according to claim 1 or 2, characterized in that forming a directed stream of air with dust and gases include additional source of ventilation thrust, located in the waste chamber.

5. The method according to any one of claims 1, 3, characterized in that forming a directed stream of a mixture of fresh air with an air stream contaminated with dust and gases include additional source of ventilation thrust, located in the linkage between sewage generation and waste chamber and oriented to work in the direction of the ventilation drift.

6. The method according to claim 1 or 3, characterized in that the linkage between the exhaust chambers, and in the waste chamber, adjacent to longwall development, in the area between her mates with the transport passage and the linkage between the treatment formulation install ventilation jumpers.



 

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