Abstract:
In order to accurately measure the pressure value of oil-type gas in coal and oil-gas symbiosis mine floor, based on the comprehensive analysis of oil-type gas characteristics of Huangling Coal Mine No.2 coal floor, we propose oil-type gas pressure measurement technology of "pressure measurement and pressure drainage" integration, and the results showed that gushing gas in No. 2 coal floor is typical of oil-type gas, which is mainly in the free state in the floor strata, and the distribution is not continuous; the measuring value is low by conventional method, and the oil-type gas pressure in Huangling No.2 Coal Mine floor taking the "pressure measurement and pressure drainage" integration technique is 0.48 to 1.12 MPa, and the pressure recovery period is 0.18 to 8.0 h.