Method for coal extraction using activated plough

FIELD: mining.

SUBSTANCE: method for coal extraction using dynamic plough involves cutting of deep advance slots in formation mass at the roof, soil and middle, working face, and further destruction of mass in two consoles weakened with slots are performed by shearing; at that, width of cut slot and cutting depth of consoles is set and adjusted along the strike due to turning angle relative to working face of actuator with cutting tool the cutters of which describe ellipsis trajectory, and shearing force is created due to external taper surface of actuator housing when the plough is being moved along the working face.

EFFECT: improvement of coal extraction controllability on coal formations with complex structure; increase in depth of removed chips.

 

The invention relates to the mining industry and can be used in coal mining.

There is a method of underground mining of minerals, in which for the extraction of coal is used the plow off the chip at full capacity of the reservoir [1].

The disadvantage of this method is the high energy consumption of the separation of coal from the array and the small thickness of the removable chip.

The known method of coal extraction, implemented dynamic plane, which removes the chips at full capacity of the reservoir, and the dynamic plane has a body, working bodies with cutting tools, vibration exciter, transmission sprocket, an endless traction chain, working branch which goes around the drive sprocket, working bodies have limited longitudinal movement relative to the housing, and the upper, roof, and bottom, soil, made static [3].

The disadvantages of the method - high intensity separation of the coal from the array, dynamic cutting is not used in roof and floor.

The closest technical solution is a method of coal extraction, which initially cut leading deep cracks in the array layer at the roof of the soil and the middle, and the further destruction of the array in two weakened by cracks consoles are chipping with the help of the cutting tool [2].

The disadvantage of this method is now the possibility of changing the width of the slit, the adjustment upon changes in the characteristics of the reservoir (the fortress of coal, tremenously, hypsometry and others).

Object of the present invention is to improve the manageability of coal extraction in coal seams with a complex structure and increasing the depth of the removable chip.

The solution of this problem is achieved in that the recess coal dynamic plane including the cutting of deep progressive slots in the array layer at the roof of the soil and the middle, and the further destruction of the array in two weakened by cracks consoles are chipping, characterized in that the width of the cut slit and the depth of the cutting consoles set on the fly adjust (change) due to the angle of rotation about the breast slaughter of the Executive body with a cutting tool, the cutters of which describe Ellipso (oval) trajectory, and shearing force create due to the conical outer surface of the valve body when the flow plane along the face.

The invention is illustrated by drawings.

Figure 1 - diagram of the formation of cracks leading;

Figure 2 - position of the cutting element when the cutting of the leading slots;

Figure 3 - position of the cutting element when the cutting base console and chipping it.

In the drawings, the following notation: 1 - coal seam; 2 - body dynamic plane; 3 - Noyer; 4 is an Executive body with the tapered outer surface of the housing; 5 - rotating mechanism of the Executive body with a cutting tool.

The cutters of the cutting tool of the Executive body to describe the breast slaughter Ellipso (oval trajectory).

Width operahouse slit is mounted swivel mechanism: the minimum, provided that the minor axis of the ellipse and perpendicular to the ground layer, and the largest in parallel soil layer.

If you need to cut a wider slot working body turn at some angle α, but not more than 30°.

When trimming the reason consoles working body rotate to any angle up to 90°. The ability to vary these values depends on the magnitude relationship of the major and minor axis of the ellipse, for example, as:≈1:2.

When cutting the leading cutting slits body moves along a major axis of the ellipse (figure 2), the width of the slit is equal to the minor axis of the ellipse.

For the destruction of the consoles turn the Executive body of the swivel mechanism 5 at the angle of 90°, which provides the cutting base consoles and creates conditions for their spallation due to the rotation angle to 90° and using the tapered surface of the valve body as a wedge, shearing the console.

LITERATURE

1. The kundel X. Excavation of coal: TRANS. with it. Ed. Wearemedia. / H. Kundel. - M.: Nedra, 1986. - P is R. ed.: Germany, 1983. - P.59-63.

2. AS THE USSR. No. 110597. The method of coal extraction. Appl. 20.03.1958.

3. The dynamic plane. RF application No. 96110016/03. Alexandrov V.E., Tours A.P., providing A.G., Sesyutchenkov M.A., Osherov B.A., Zagainyi LB 1996.05.20. Publ. 1998.08.20.

The method of coal extraction dynamic plane including the cutting of deep progressive slots in the array layer at the roof of the soil and the middle, the bottom, and the further destruction of the array in two weakened by cracks consoles are chipping, characterized in that the width of the cut slit and the depth of the cutting consoles establish and regulate the course due to the angle of rotation about the breast slaughter of the Executive body with a cutting tool, the cutters of which describe Ellipso trajectory, and shearing force create due to the conical outer surface of the valve body when the flow plane along the face.



 

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