煤矿安全2017，Vol.48Issue(8)：109-112,4.DOI:10.13347/j.cnki.mkaq.2017.08.031
水力冲孔造穴瓦斯抽采强化机制及其在寺家庄矿的应用
Gas Drainage Reinforcement Mechanism of Hydraulic Flushing and It's Application in Sijiazhuang Coal Mine
摘要
Abstract
With the background of loose and low permeability coal seam gas control project in Sijiazhuang Coal Mine,COMSOL software is used to simulate the stress and permeability evolution of coal surrounding the boreholes and characteristics of gas flow.On this basis,considering the mutual interference among boreholes into account,the gas extraction scheme was designed and field practice was carried out.The results show that,after using the hydraulic flushing technology,the footage of boreholes decreases by 45.9 ％,while the gas concentration increases by 3 times and the gas extraction increases by 1.9 times,the effect of gas drainage has been greatly improved.关键词
水力冲孔造穴/卸压增透/瓦斯抽采/突出煤层/数值模拟Key words
hydraulic flushing/pressure relief and permeability improvement/gas extraction/outburst coal seam/numerical simulation分类
矿业与冶金引用本文复制引用
石建文,韩柯,范毅伟,张锐,王亮..水力冲孔造穴瓦斯抽采强化机制及其在寺家庄矿的应用[J].煤矿安全,2017,48(8):109-112,4.基金项目
国家自然科学基金资助项目(51674252) （51674252）
国家自然科学基金青年科学基金资助项目(51004106) （51004106）
