Permeability-increasing type gas extraction plugging method for mine rock mass drilling hole

• Main Authors: SONG WENCHENG, MA KE, QIAN XIKUN, XUE RUIXIONG, LIANG ZHENGZHAO, ZHAO CHUNBO, MA TIANHUI
• Format: Patent
• Language: Chinese; English
• Published: 06.03.2018
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention discloses a permeability-increasing type gas extraction plugging method for a mine rock drilling hole. The permeability-increasing type gas extraction plugging method solves the problemsthat in the prior art, the plugging effect of a mine rock mass drilling hole is poor and the collecting effect is not ideal, and the plugging effect of the drilling hole is ensured by adopting a triple-plugging mode; and high-pressure permeability-increasing treatment is conducted on fractures of the rock mass around a collecting cavity to ensure the effect of gas collection of the rock mass. According to the technical scheme, the permeability-increasing type gas extraction plugging method comprises the following steps that gas extraction hole drilling is conducted, specifically, a drilling machine is used for drilling towards a top plate coal rock mass or a bottom plate coal rock mass in sequence according to a set angle until reaching a coal seam in a designated extraction area in a roadway; a test probe is mou