In order to cope with the borehole sealing problem occurred during coal seam gas drainage,this paper analyzes the borehole sealing mechanism and influence factor,introduces the borehole sealing materials and equipment,and describes fixed-point targeting sealing process based on active expansion.This process is intended to improve the gas drainage efficiency by sealing the holes at selected locations downhole and en-hancing the sealing performance based on the expansion characteristics of the active expansion materials,pro-viding a reference for drainage borehole sealing in high gas mines.
关键词
瓦斯抽采/主动膨胀/定点靶向/封孔工艺
Key words
Gas Drainage/Active Expansion/Fixed-Point Targeting/Hole Sealing Process
维普
万方数据