Water and slag discharging device for coal and rock mass with fracture development

Abstract

The invention discloses a water and slag discharging device for a coal and rock mass with fracture development. The device includes a cylinder diving into a downward borehole and a drainage pipe inserted into a lower portion of the cylinder and further includes a blowing pipe, wherein an outlet end of the blowing pipe is flush with the bottom of the cylinder, the top of the cylinder is provided with a cover, the bottom is provided with a unidirectional conduction mechanism, the cylinder is provided with an intake and exhaust device, the accumulated water in the borehole is sucked by the intakeand exhaust device into the cylinder through the unidirectional conduction mechanism during exhausting, in the intake process, the accumulated water is pressed outside the borehole through the drainage pipe. The device is advantaged in that the compressed air in the underground is utilized as the power, firstly, the accumulated water and the slag in the borehole are stirred by the blowing pipe, when the intake and exhaust device is in the exhaust state, the accumulated water mixed with the slag enters the cylinder, the compressed air is filled into the cylinder through the intake and exhaustdevice, and the accumulated water and the slag are discharged from the cylinder to the outside of the borehole.

Description

technical field [0001] The invention relates to the technical field of underground gas drainage equipment in coal mines, in particular to a device used for discharging accumulated water and slag when drilling downward through layers on a coal rock mass with developed cracks. Background technique [0002] In the process of safe coal mining, gas drainage is the fundamental measure to solve disasters and accidents such as coal and gas outburst. Downward drilling for gas drainage is to construct a rock roadway in a stable rock stratum at a certain distance from the roof of the coal seam before the coal seam excavation roadway, and through this roadway to construct a seam penetration drilling hole into the coal body around the coal seam excavation roadway. Pre-pumping for a period of time reduces or even eliminates the risk of coal and gas outbursts in the excavation face. The biggest problem encountered by this technology is: due to the downward construction of the borehole, it...

AI Technical Summary

Problems solved by technology

[0005] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide a convenient and efficient drainage and slag discharge device to solve the problem of water accumulation in the hole after the downhole drilling in the coal rock mass with developed cracks is formed. More slag affects the sealing problem, so as to ensure the quality of sealing holes and improve the concentration of gas drainage

Images