Method for cutter-loader self-sumping in coal body

FIELD: mining, machines which completely free the mineral from the seam by slitting, particularly cutter-loaders provided with two auger executive tools spaced apart large distance.

SUBSTANCE: method involves preparing cutter-loader and support units; moving cutter-loaded to central breakage face section; moving face conveyer flight part; returning cutter-loader; supplying support units and supporting roof over cutter-loader; moving cutter-loader in extreme position so that the first executive tool enters drift joined to breakage face; preparing cutter-loader by removing the second executive tool from opposite drift side or arranging thereof in transport position; installing the first executive tool in lower position. Face conveyer flight is moved along the full breakage face length, namely in frontal manner. Cutter-loader is moved in central part of breakage face along with bottom massif bank cutting and kert forming, wherein the kert extends for length of not less than cutter-loader length. Then cut coal is loaded on conveyer. After cutter-loader return the second executive tool is installed in place or moved in working position.

EFFECT: increased efficiency of gently sloping coal bed development due to provision of cuter-loader self-sumping during front movement of face conveyor.

3 dwg

 

The present invention relates to mining, in particular to methods of Samothraki of the Shearer in the array during underground mining of formation of minerals by means of complex mechanization.

The known method front Samothraki of the Shearer in the coal massif, including the preparation of the harvester, the notch harvester mercincavage pillar in soil formation, shifting of the conveyor in the direction of the array together with the combine in width, the notch of the upper stack of coal to drift, the notch lower unit from the roadway to Samothraki and mercincavage pillar [1]. The drawback of this method is that during the shifting rod conveyor at the bottom occurs in the pair of forces acting on the harvester with conveyor: one power from the shields, acting through the jacks advancing towards the bottom, the second reaction force coal array acting on the screws harvester and directed away from the face. As a result of this pair of forces likely impossible to combine with rod conveyor or accidents with the conveyor or other equipment. For this reason, at present this method of Samothraki combine in the coal massif never used.

For the prototype method Samothraki of the Shearer in the coal massif "oblique race", including the preparation of whom the Aina translation of both Executive bodies in the lower position, the movement of the harvester on the part of the conveyor in the workspace stope at a distance not less than the length of the harvester with the notch wedge-shaped strip of coal, shifting netadvantage part of the rod and head end of the conveyor, the return of the harvester to mate stope with drift with the notch of the remaining pillar of coal and training combine to notch another strip coal installing screws in the desired position [2].

The disadvantage of the prototype is that when Samothrace combine "oblique race" inevitably bends becoming the pipeline, and this in turn leads to increased wear of the conveyor pans rod and chain, as well as frequent accidents pipeline (hence, the entire stope).

These deficiencies in the aggregate, reduce the effectiveness of the development sloping coal seams by means of complex mechanization.

The purpose of the invention is the increased efficiency of the development sloping coal seams by means of complex mechanization by Samothraki of the Shearer in the coal mass at the front of the AFC push.

This objective is achieved in that in the method of the notches of the combine, including the preparation of the harvester and shields, ferrying combines Oistamo slaughter, the shifting of part of part of the AFC, the return of the combine, the shifting of the sections to the ETUI and the fastening of the roof above the harvester, the harvester is transferred to the end position, in which the first Executive body comes to mating with clearing face the roadway, the preparation of the harvester carry out the destruction of the second of the Executive body, on the opposite side of the roadway, or by putting it into the transport position, and the first Executive body is installed in the lower position, the shifting rod AFC carry out the entire length of the stope - front, driving the harvester on Oistamo culling is performed with the destruction of the lower unit of the array and the formation of undercut on the length not less than the length of the harvester and loading the broken coal onto the conveyor after returning combine the second Executive body set in place or transferred to working position.

The proposed method and processor for its implementation are illustrated by the drawings. Figure 1 shows the initial position of the harvester before notch (view in plan); figure 2 - position of the harvester after frontal advancing conveyor; figure 3 - end of the notch.

The proposed method can be implemented as follows. Before the implementation of Samothraki combine 1 shifted to the extreme position, in which the screw 2 is located in the drift space 3, and the second auger 4 in the working space of the stope 5, and the harvester is mounted on the rod AFC 6, to Nava head (not shown) also extends into the drift space 3. The shields moved to the bottom and ready to AFC push.

Samothrace combine in coal array is carried out with unilateral or chelnokova scheme recesses in the following order. The first auger 2 is lowered to the ground layer, and the second auger 4 is removed or transferred to a transport position in which it is located above the conveyor and between the conveyor and clearing face formed space with a minimum width of width of the Executive body. Then jacks advancing shields provide front shifting of the conveyor 6, i.e. along the whole length of the stope with the harvester. As a result of this first auger 2 will be created in the zone for withdrawal of the new runway coal. Then include the conveyor 6 and start the movement of the Shearer from this passage 3 to the opposite. The first auger 2 carries out the seizure of the lower top loading it on the conveyor 6 and the formation of undercut 7 of the soil layer on a length not less than the length of the Shearer. After performing shear 7 harvester return in the original extreme position, return to the place of the second auger 4 and take out Misnikov upper stack of coal. Next augers 2 and 4 set at a given altitude and begin to notch another strip of coal.

Thus, removal or transfer of one of the augers in Tran is portnaya position, although it requires design changes harvester allows the front shifting is stopped the AFC along with a combine that will prevent increased wear of the pans and the chains of the conveyor, will reduce the accident rate of the conveyor and stope in General, i.e. will increase the efficiency of development sloping coal seams by means of complex mechanization. This is the purpose of the invention.

Sources of information

1. Burdakov A.S. Processes of underground mining operations. /Ashburnham, Nchinda, Ilhama. Textbook for high schools. 3rd ed., Rev. and ext. M.: Nedra, 1982, s-147, Fig. IV.3 (similar);

2. Ibid, p.148, .IV.4 (prototype).

How Samothraki combine in the coal massif, including the preparation of the harvester and shields, stretch combine in the middle part of the stope, the shifting of part of part of the AFC, the return of the combine, the shifting of the support units and the fastening of the roof above the harvester, wherein the harvester is transferred to the end position, in which the first Executive body comes to mating with clearing face the roadway, the preparation of the harvester carry out the destruction of the second of the Executive body on the opposite side of the roadway or its transfer into the transport position, and the first Executive body is installed in the lower position, the shifting rod downhole con is aera carried out along the entire length stope - front, driving the combine in the middle part of the stope is performed with the destruction of the lower unit of the array and the formation of undercut on the length not less than the length of the harvester and loading the broken coal onto the conveyor after returning combine the second Executive body set in place or transferred to the working position.



 

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