Hole-sealed Technology of Gas Drainage Drilling in Hydrous Seam

Sealing material and process is one of the key technologies to determine gas drainage effect. Aiming at the problem of poor sealing quality of gas drainage drilling in hydrous seam, using new sealing material with the impermeable role of sealing bags and the improved sealing process, the drilling fulled with water can be sealed effectively, which can ensure the gas drainage effect.