Bottom plate rock roadway layer penetrating drilling hydraulic slag discharging efficient cleaning system and method

Abstract

The invention discloses a bottom plate rock roadway layer penetrating drilling hydraulic slag discharging efficient cleaning system and method, and relates to the technical field of coal and gas outburst prevention and treatment. An extraction device, a coal water separation device, a filter pressing device and a transportation device are included. The extraction device comprises a drilling machine and an extraction pipeline. A coal water extracting and releasing pipe of the extraction pipeline is connected with the coal water separation device. A coal water separation bin of the coal water separation device is connected with a filter pressing pump of the filter pressing device through a coal unloading pipe. After the filter pressing device extrudes coal slime, the transportation device isused for conveying coal cakes. When the system works, the drilling machine is used for drilling, then, the extraction pipeline is installed, coal-water-gas mixture is extracted and released, gas is collected through a gas extracting and releasing pipe, and the coal water mixture enters the coal water separation device. The coal water separation device separates coal and water, and residual gas iscollected. After the coal slime enters the filter pressing device, the coal slime is extruded into the coal cakes and then conveyed out through the transportation device. According to the system andthe method, the coal-water-gas mixture can be efficiently separated, and the gas extraction operating efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of prevention and control of coal and gas outburst, in particular to a high-efficiency cleaning system and method for hydraulic slag discharge of floor rock roadway through layer drilling. Background technique [0002] As the mining depth of coal mines increases, the in-situ stress, gas pressure and content of coal seams increase significantly, and the difficulty of preventing and controlling coal and gas outburst disasters increases significantly. [0003] At present, for soft and low-permeability outburst coal seams, floor rock roadway penetration drilling is usually adopted hydraulic coal flushing coal pressure relief and anti-permeability pre-pumping technology. In the process of coal construction, the method of increasing the water pressure-scouring the wall of the borehole in the soft coal seam-washing out a large amount of coal mass-enlarging the borehole diameter can effectively unload the original s...

AI Technical Summary

Problems solved by technology

Usually, no measures are taken to deal with the above-mentioned discharged mixture. In addition to causing gas over-limit accidents, the discharged coal-water will quickly accumulate on the floor of the roadway to form a large area of ​​coal slime, which will seriously affect the subsequent drilling construction and hole sealing. Drainage operations reduce work efficiency; even if the blowout hole device is used, the coal slime accumulated on the floor of the roadway cannot be disposed of in time, which affects the working environment

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