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The device uses the physical properties of the water and the gas itself different density, through the hole outburst device seals the hole, so that the gas released with the drilling through the pipe into the gas (water) separator, so that the gas, water mixture in The gas-water separator is naturally separated and the gas containing gas is withdrawn by the pumping pipe. The water sinks by gravity and is discharged through the water discharge hole, thereby achieving the purpose of gas and water separation and successfully extracting gas. The device has the advantages of low cost and convenient operation. After being put into use at the site, the device can effectively prevent gas leakage due to gas injection holes during drilling.
A new type of gas drainage device has recently been successfully developed at Henan Zheng Coal Group Chaohua Mine. The device is applied underground at the site and the drainage gas has a good effect.