Gas Pressure Measurement of Coal Seam Under Complex Geological Conditions

Geological conditions were very complex in coal mine underground, and the measurement results of coal seam gas pressure were often affected by the fissure water in the process of the gas pressure determination. It proposed the methods that blocking water with pressure grouting, plugging holes with capsule-mucous and using the initiative manometry technology in the process of the determination in Changpo Coal Mine, obtained the measurement results of coal seam gas pressure quickly and accurately.