High-efficiency thin coal seam complete-set coal mining equipment and coal mining method

Abstract

The invention relates to high-efficiency thin coal seam complete-set coal mining equipment and a coal mining method; a coal mining machine is an electric traction coal mining machine, and a machine body is hung out of a scraper conveyer. The coal mining method includes the steps: the equipment is arranged on a coal mining working face in a complete-set mode; the coal mining machine is moved to a position of an advanced notch for feeding, after feeding, the scraper conveyer is propelled by a transition way, and the coal mining machine goes forward to cut coal so as to complete feeding; after completion of feeding, the coal mining machine goes forward to cut the coal at a speed of 3-4 m per minute along a coal wall and allows the coal to be loaded to a middle groove of the scraper conveyer; after the coal mining machine walks, a hydraulic support is pushed to move; and pushing downspouting is carried out in the range of 10-15 m behind the hydraulic support propelled to move. The problem of extremely thin coal seam mechanization comprehensive mining is solved, all mining devices are mechanized, and the mining devices satisfy the problem of extremely low mining height space arrangement, the complete set of equipment is rational in layout, the coal mining steps are reasonably carried out, the production efficiency is improved, the worker participation degree is reduced, and the mining safety is improved.

Description

technical field [0001] The invention relates to a high-efficiency complete set of coal mining equipment and a coal mining method for mining coal in thin coal seams. Background technique [0002] According to regulations, coal seams below 0.8m are called extremely thin coal seams. my country's thin coal seam resources are abundant and widely distributed. The recoverable reserves of coal seams below 1.3m account for about 20%. In some provinces and regions, thin coal seam reserves account for a large proportion, such as Sichuan Province accounts for 60%, Shandong Province accounts for 54%, Heilongjiang Province accounts for 51%, and Guizhou Province accounts for 37%. Especially in the southern region, some provinces have thin coal seams that account for more than 50% of the net, and the thin coal seams are widely distributed and the coal quality is good. However, due to its thin coal seam, compared with medium-thick and thick coal seams, mechanized mining of thin coal seams ...

AI Technical Summary

Problems solved by technology

At present, there are mainly the following problems in the method of mechanical mining in extremely thin coal seams: 1. The initial investment in equipment is large, the roadway construction section is large (above 12m2), and the resource recovery rate is low (about 60%) and other shortcomings.

2. For extremely thin coal seams with a mining height of less than 0.8m, the top and bottom gaps need to be lifted, and the workload is relatively large. In addition, the frequent movement of equipment makes it more difficult to protect the roof, and the workload of preparation is relatively large, and the working face with little geological change , the yield per unit area is difficult to increase

3. There is no fundamental improvement in the current situation of the large number of people employed at the working face, the high labor intensity of the workers, and the poor safety environment at the working face

Since the above two technologies belong to some technical features disclosed in the development process of this technology, they have not been disclosed completely, and only some technologies that are expected to be disclosed are disclosed. In the subsequent specific testing and implementation process, some problems or technical changes have occurred, or specific The characteristic technology has not been disclosed

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