Fluidized coal and gas simultaneous mining system and synchronous mining method of system

Abstract

The invention discloses a fluidized coal and gas simultaneous mining system and a synchronous mining method of the system. The fluidized coal and gas simultaneous mining system comprises a hydraulic mining part, a shaft bottom coal and rock treatment part and a coal and rock transport part. Gas released in a hydraulic mining process can be extracted by a gas extraction pump through a gas extraction inclined hole formed in the top of a coal mining driller, a hydraulic mined coal and rock mixture can be subjected to coal and rock separation by the shaft bottom coal and rock treatment part and the coal and rock transport part and then transported upwards and out of a well in a classified manner, the hydraulic mining part and the shaft bottom coal and rock treatment part work respectively without influence to each other, and reliability and mining efficiency of the hydraulic mining process can be greatly improved; automatic work of manless mining can be realized, and mining safety of a coal and gas outburst coal seam is greatly improved; and the system is suitable for mining coal seam resources such as boundary coal and wandering coal seams with low coal content and complex geologicalconditions and is particularly applicable to coal mining of a soft and weak coal seam where coal and gas are prone to outburst.

Description

technical field [0001] The invention relates to a coal body and gas simultaneous mining system and a simultaneous mining method thereof, in particular to a fluidized coal body and gas simultaneous mining system and a simultaneous mining method thereof, belonging to the technical field of coal mining. Background technique [0002] Gas disasters in China's coal mines are serious, and many mining areas are facing serious risks of coal and gas outbursts during coal mining. At present, except for a small amount of open-pit coal mining, more than 90% of coal mines in China adopt underground mining, that is, coal mining is carried out by arranging coal mining roadways underground, and the coal is transported to the ground through a transportation system. The most commonly used method is It is a longwall retreating face coal mining method. [0003] When underground coal and gas outburst coal seams are mined, on the one hand, in order to eliminate the threat of outburst, it is often...

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Problems solved by technology

However, such a structure is not only difficult to control in the actual application process, but also may cause mutual influence to cause functional failure, and there are problems with complex mining equipment and processes, and the high-pressure water channel and compressed air channel greatly compress the space of the slag return cylinder, and The slag return cylinder cannot be lifted at the same time during hydraulic mining, resulting in low mining efficiency

The drilling hydraulic coal mining method proposed by other prior art all has the above-mentioned problems, which makes it very difficult to apply the drilling hydraulic coal mining method on the coal mine site, which seriously limits the popularization and application of this method

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