煤矿安全2019，Vol.50Issue(5)：158-161,167,5.DOI:10.13347/j.cnki.mkaq.2019.05.040
大平煤矿穿层钻孔瓦斯抽采负压优化研究
Optimization of Negative Pressure for Gas Extraction in Through Beds Hole of Daping Coal Mine
摘要
Abstract
In the process of gas extraction in Daping Coal Mine, the gas extraction concentration is low and the effective pre-pumping period is short, so it is not good for gas extraction. The research topic of negative pressure optimization for gas drainage is proposed. A comprehensive analysis and test is carried out to determine the negative pressure of the suction hole by combining the attenuation of gas parameters and the attenuation of gas concentration in the hole under different suction pressure. The field test and analysis on 21 upper part of the tunnel show that the negative pressure range of -25 to -35 kPa in the test area of 21 upper part of Daping Coal Mine is reasonable, and the optimum extraction negative pressure is determined to be -30 kPa.关键词
穿层钻孔/瓦斯抽采/负压优化/煤岩裂隙/漏气通道Key words
through beds hole/gas extraction/negative pressure optimization/coal and rock fissure/gas leakage passage分类
矿业与冶金引用本文复制引用
张亚鹤,魏风清,张永鹏,陈祖国..大平煤矿穿层钻孔瓦斯抽采负压优化研究[J].煤矿安全,2019,50(5):158-161,167,5.基金项目
国家科技重大专项资助项目(2016ZX05067-001) （2016ZX05067-001）
天地科技科技创新创业资金专向资助项目(2018-TD-QN051) （2018-TD-QN051）
中煤科工集团西安研究院有限公司科技创新基金重点资助项目(2018XAYZD05) （2018XAYZD05）
