“测压-抽采”一体化底板油型气压力测定技术

“Pressure Measurement and Gas Drainage”Integrated Oil-type Gas Pressure Measuring Technology in Coal Seam Floor

为了准确测定煤油气共生矿井底板油型气压力值,在综合分析黄陵矿区2煤底板油型气特征的基础上,提出了＂测压-抽采＂一体化的底板油型气压力测定技术,研究结果表明：2煤底板涌出气体是典型的油型气,在底板岩层中以游离态为主,分布具有不连续性,利用常规测压方法测值严重偏低,采取＂测压-抽采＂一体化的底板油型气测定技术实测黄陵2号煤矿底板油型气压力为0.48～1.12 MPa,压力恢复周期为0.18～8.0 h。

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.