This invention aims at providing a solution to the problems of the prior art and provide a wet drilling blowout prevention device and a method for coal mine gas drainage drilling, which are safe, reliable and convenient to operate, and can not only effectively realize drilling blowout prevention, but also carry out dust collection on drilling gas. The invention has as its beneficial effect that due to the adoption of the technical scheme, the drilling blowout prevention device can effectively realize drilling blowout prevention, and can also carry out dust removal and collection on drilling gas. During the construction of gas drainage drilling, by using the wet drilling blowout prevention device for coal mine gas drainage drilling, the gas in the borehole can be pumped into the device and into the mine drainage system, instead of directly pouring into the construction drilling field, which not only solves the problem of abnormal and over-limit gas in the drilling field during the drilling construction, but also avoids the problem of personal injury caused by high-concentration gas spraying holes in the drilling process; at the same time, the gas extracted from the hole is subjected to wet dust removal and slag removal, which reduces the dust concentration in the construction site and avoids the dust exceeding the limit, and has wide practicability in this technical field.
WET DRILLING BLOWOUT PREVENTION DEVICE AND METHOD FOR COAL MINE GAS DRAINAGE DRILLING
