Water cutting falling coal mining method and water cutting falling coal mining machine

Abstract

The invention belongs to a coal mining method and a coal mining machine, and concretely relates to a water cutting falling coal mining method and a water cutting falling coal mining machine. A coal seam is cut and coal falls when and / or after the machine adopts a water jet cutting device to transversely cut a coal wall, and the machine body moves on to drive the water jet cutting device and a water jet falling device to realize continuous coal mining. Compared with machines for realizing present coal mining methods, the water cutting falling coal mining machine has the advantages of high lump coal rate, realization of regular shapes of coal obtained after cutting, improvement of the use values and the economic values of raw coal, energy saving, low energy consumption, less dust, compact structure, use convenience, material saving, no need of the adjustment of the machine body, realization of the continuous coal mining through adjusting the right and wrong directions of the machine body, omitting of coal mining support equipment, and saving of the coal mining equipment investment, and can be used as a drilling machine to complete the drilling of roadways and dig out various chambers and roadways; no sparks and high safety are realized through adopting a water jet to cut coal; and mist spraying, water spraying and cooling devices used in mechanical coal mining are omitted when water jet cutting is adopted, so the structure of the machine is simplified, the failure rate is low, and the maintenance amount is less.

Description

technical field [0001] The invention belongs to the field of coal mining, and in particular relates to a water-cut split coal mining method and a water-cut split coal mining machine. Background technique [0002] Existing coal mining methods include mechanical coal mining, hydraulic coal mining, and blasting coal mining. Under the conditions of some large or unstable coal seams, modern mechanical coal mining methods cannot be used, and hydraulic coal mining methods or blasting coal mining methods are often used. The current hydraulic coal mining method uses fixed-point jets of water guns to impact the coal drop. The range of the water gun determines the coal mining distance. With this coal mining process, the required water pressure is large, the water volume is large, and the distance between the water gun and the coal drop point is relatively large. , often occurs in the flushing process, the roof in the stack collapses or flees ahead of time, blocking the flushing of the...

AI Technical Summary

Problems solved by technology

Drum shearer has high productivity, but low lump coal rate and large dust; plow has high lump coal rate and small dust, but low production efficiency and poor coal seam adaptability

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