The method of transportation of coal in the mine

 

(57) Abstract:

The invention relates to mining, namely the development of minerals by underground mining, and relates to methods of transportation of coal mining from the harvester to the surface. The method of transportation of coal in the mine includes the loading of coal on the main conveyor and transporting it to the next vehicle. The coal coming from the face conveyor, load in a soft cylindrical shell, folded in the form of a helical torus, the outer end of which is sealed, fill it 80-90% of the volume, hermetically close the free end of the soft cylindrical shell and transported to the surface. The amount of soft cylindrical shell equal to the volume of coal mined in one chip. Safety work in the mines, hazardous gas and dust. 1 C.p. f-crystals, 1 Il.

The present invention relates to mining and concerns the methods of transporting coal mining from the harvester to the surface (down to the consumer).

There is a method of transporting coal from the stope self-propelled trolleys (Burakov A. S. and other Technology, mechanization and the mining face, will ship in a self-propelled trolley and then transported to the stem or to the surface.

The main disadvantages of this method are the dust and gas emission in the process of loading and unloading of coal and transportation for mining, and in this regard is the continuing risk of explosion of gas or dust.

Closest to the proposed to the technical essence and the achieved effect is the way (Burakov A. S. and other Technology, mechanization and automation of production processes of underground development. M.: Nedra, 1968. S. 182, Fig.89), according to which the coal is captured by the harvester ship loose on the conveyor, transported to the next conveyor overload on him by free pouring, etc. to the surface.

In the famous decision of the high security cannot be achieved due to the transportation of coal in bulk in direct contact with the stream of fresh air flowing into cleaning the face with a gas selected from the broken coal transportation and coal dust generated during each overload. In addition, when transporting coal on belt conveyors happen spillage of coal and tastybaby conveyors that t the solutions is to ensure the safety of work in the mines hazardous gas and dust.

This objective is achieved in that the coal coming from the face conveyor, load in a soft cylindrical shell, folded in the form of a helical torus, the outer end of which is sealed, fill it 80-90% of the volume, hermetically closing the second end of the soft cylindrical shell and transported to the surface. The amount of soft cylindrical shell equal to the volume of coal produced in the same chip, for which the dimensions of the soft cylindrical shell is chosen from the condition

0,83,14 R2L=kmbl,

where 0,8 - fill factor soft cylindrical shell charcoal;

R is the radius of the soft cylindrical shell, m;

L - length soft a cylindrical shell, m;

k - factor loosening of coal;

m - seam thickness, m;

b - width of the harvester, m;

l is the length of the lava, m

The essence of the proposed technical solution is illustrated in the drawing, which shows a diagram explaining a method of transporting coal.

The method is as follows.

Coal, repulsed by the harvester ship loose on the main conveyor 1 and transported it to the next vehicle (e.g., conveyor) 2. is olocco 4, rolled into the form of a helical torus, the outer end of which is sealed. Under the weight of coal soft cylindrical shell 4 spins and falls on the following vehicle (e.g., conveyor) 2, by moving which it is filled for 80-90% of their volume, which corresponds to the amount of coal in a single chip. Thereafter, the free end of the soft cylindrical shell, sealed and transported the coal to the surface. The specific value of the fill factor soft cylindrical shell to be confirmed experimentally in the process of operation.

The speed of the vehicle 2 (corresponds to speed soft cylindrical shell) agree with the efficiency of the harvester according to the following dependence:

Q=0,83,14 R2VY,

where Q is the efficiency of the harvester, t /min;

V - vehicle speed (the moving speed of the soft cylindrical shell), m/min;

Y is the volumetric weight of coal, t /m;

0.8 - fill factor soft cylindrical shell charcoal;

R is the radius of the soft cylindrical shell, m

Thus, the dimensions of soft cylindrical shell is chosen from the condition

0,83,14 R2L=kmbl, the tion of the shell, m;

L - length soft a cylindrical shell, m;

k - factor loosening of coal;

m - seam thickness, m;

b - width of the harvester, m;

l is the length of the lava, m

I.e. the soft cylindrical shell corresponds to the amount of coal in a single chip. The soft radius of the cylindrical shell take on the basis of technical parameters of the transport device, for example, the width of the conveyor belt, i.e., only one parameter - the length of the soft cylindrical shell.

Consider the example of calculating the length of the soft cylindrical shell under specific conditions. Initial data let us assume the following: k=1,4; m=2 m R=0.5 m; b= 0.7 m; 1=20 m, hence L=63 m, radius 0.5 m is adopted on the basis of the width of the conveyor belt, which is taken equal to 1 meter, the filling Factor of the soft cylindrical shell coal, equal to 0.8, is taken to avoid overloading the shell coal and its destruction during transportation.

Additional source data for calculating the moving speed of a soft cylindrical shell: Q=3 t/min; Y=1,35 t/m2hence V=3.5 m/min

After removing chips free end of a soft cylindrical shell, sealed and ustang">

The proposed solution has the following advantages:

security-related operations in a mining face and mine:

completely eliminated the danger of explosion of coal dust and methane in mines, which transported coal;

- reduced by 40% of the total amount of methane in the mine due to the isolation of extracted coal from the external environment;

- reduced fire risk associated with the reduction of coal losses during transportation (fire belts when zastarovje);

related technology:

- temporary storage of extracted coal in the mine (bankarization);

- reducing the moisture and ash content of coal;

- complete elimination of coal losses during its transportation through the workings (and to the consumer);

the separate issue of coal layers with different brands of coal (primary sort);

- performance conveyor transport through the conclusion of extracted coal in the shell;

feasibility:

- the elimination of costs associated with the reduction of the cross section of workings from losses during transportation of coal;

- reduction of wear parts transport equipment,

- reducing owenie process of unloading during transportation on the surface;

socio-economic:

- reducing the risk of occupational diseases (antraks);

- creating a more comfortable working conditions;

- reducing psychotropic effects on human working conditions underground, associated with the above risks to life and health.

1. The method of transportation of coal in the mine, including loading the broken coal is on the main pipeline and the transportation of it to the next vehicle, characterized in that the coal coming from the face conveyor, load in a soft cylindrical shell, folded in the form of a helical torus, the outer end of which is sealed, fill it 80-90% of the volume, hermetically close the free end of the soft cylindrical shell and transported to the surface.

2. The method according to p. 1, characterized in that the volume of soft cylindrical shell equal to the volume of coal mined in the same chip, for which the dimensions of the soft cylindrical shell is chosen from the condition

0,83,14 R2L=kmbl,

where 0,8 - fill factor soft cylindrical shell charcoal;

R is the radius of the soft cylindrical shell, m;

L - length soft a cylindrical shell, m;

k - what you m

 

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