煤矿安全2019，Vol.50Issue(5)：15-18,4.DOI:10.13347/j.cnki.mkaq.2019.05.004
高压电脉冲放电煤层增透研究
Research on Coal Seam Permeability Improvement by High-voltage Electric Pulse Discharge
摘要
Abstract
For the issue of low gas drainage rate in coalbed gas development and mine safety production, a method of coal seam permeability improvement with high-pressure pulse discharge in water was proposed. First, the electrohydraulic effect and mecha-nism of water-shock wave in electric pulse discharge process were analyzed. Then, the mechanisms of coal seam cracks and crack propagation were studied. Finally, a set of experimental system with high-pressure pulse discharge was built, and the coal seam permeability improvement test of high-pressure pulse discharge was carried out. The experimental results show that method can ef-fectively change the pore and fracture structure of coal seam, and can improve the coal seam gas permeability, and has certain feasibility and superiority in seam permeability improvement.关键词
煤层增透/高压电脉冲/液电效应/水压致裂/水激波Key words
coal seam permeability improvement/high-voltage electric pulse/electrohydraulic effect/hydraulic fracturing/water shock waves分类
矿业与冶金引用本文复制引用
马帅旗..高压电脉冲放电煤层增透研究[J].煤矿安全,2019,50(5):15-18,4.基金项目
"十三五"大型油气田及煤层气开发科技重大专项资助项目(2016ZX05045-004-001) （2016ZX05045-004-001）
