Device for intensively and fast draining water in downward drainage drill hole

Abstract

The invention discloses a device for intensively and fast draining water in a downward drainage drill hole. The device is characterized in that a three-way hole-sealing sleeve pipe composed of an inner pipe and an outer sleeve pipe is arranged in a drainage drill hole; an annular chamber used as an airflow channel is arranged between the side wall of the inner pipe and the side wall of the outer sleeve pipe, and an external air delivery pipe is communicated with the annular chamber; the inner pipe is used as a draining pipe, a nozzle at the bottom of the draining pipe is connected with a draining hose used for being inserted in the bottom of the drainage hole; the nozzle at the top of the draining pipe is provided with a water draining valve; and one path of the external air delivery pipe is connected with a high-pressure air pipe by an air inlet valve, and the other path is connected with a drainage pipeline by an air discharge valve. The device can effectively drain the accumulated water in the downward drainage hole, and ensure gas drainage effect.

Description

technical field [0001] The invention relates to a downward drainage borehole drainage device applied in coal mining. Background technique [0002] Since the water accumulated in the borehole cannot be automatically discharged from the borehole with the gas pumping, it is also impossible to use the pipeline water release device to release water, resulting in a large amount of water accumulated in the borehole, and with the extension of the pumping time, the hole There will be more and more water accumulated inside, which will seriously affect the gas drainage effect. Contents of the invention [0003] In order to avoid the shortcomings of the above-mentioned prior art, the present invention provides a centralized and rapid drainage device for downward drainage boreholes, so as to effectively discharge the accumulated water in the downward drainage boreholes and ensure the effect of gas drainage . [0004] The present invention solves technical problem and adopts following...

AI Technical Summary

Problems solved by technology

[0002] Since the water accumulated in the borehole cannot be automatically discharged from the borehole after the gas is pumped down, it is also impossible to use the pipeline water release device to release water, resulting in a large amount of water accumulated in the borehole, and with the extension of the pumping time, the hole There will be more and more water accumulated in the interior, which will seriously affect the gas drainage effect

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