Method for discharging water and slag of coal mine deep hole

Abstract

The invention discloses a coal mine deep hole water and slag drainage method and a device thereof. The method comprises the following steps: firmly connecting a drain pipe and an outlet of the body of a drainage pump and firmly connecting an outlet of a compressed air station and a compressed air spray nozzle of the drainage pump through a compressed air pipe; placing the connected drainage pump in an overhead bore hole and opening a compressed air valve; after the drainage water works normally, observing the water in the overhead bore hole on site, closing the compressed air valve when observing on water or coal slag is discharged from the drain pipe, which means water is completely drained, and taking out the drainage pump after water drainage in a deep hole is finished and placing the connected drainage pump into another overhead bore hole; and repeating the former steps. Based on turbulent dispersion of gas, liquid and solid three-phrase jet flow, the device uses compressed air supplied by a coal mine compressed air station to drainage, transmit and discharge water and coal slag in coal mine deep overhead bore hole. The device is simple, convenient and easy in operation and light and smart, and overcomes difficulties in discharge water and coal slag in coal mine deep overhead bore holes.

Description

Technical field: [0001] The invention relates to a new method for drainage and slag discharge of deep holes in coal mines, which is used in the field of drainage and slag discharge of various deep and downward holes in coal mines, especially for drainage and slag discharge of small-diameter deep and downward holes. Background technique: [0002] At present, in order to pre-extract gas in my country's coal mines, it is necessary to drill a large number of deep depression holes. The depth of the holes is generally tens of meters to one hundred meters, and the diameter of the holes is Φ50-80mm. Because the hole is deep and the hole diameter is too small, there is no suitable way to discharge the accumulated water and slag in the hole. [0003] The current drainage method is to directly pass the compressed air pipe into the hole to blow part of the accumulated water out of the hole, but this method can only drain the accumulated water less than 10 meters deep, which is far from ...

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Problems solved by technology

[0003] The current drainage method is to directly pass the compressed air pipe into the hole to blow some of the accumulated water out of the hole, but this method can only drain the accumulated water less than 10 meters deep, which is far from achieving the purpose of drainage in the hole

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