摘要
通过数值模拟软件分析和现场工程试验等手段,研究了水力冲孔与压裂耦合致裂增透技术对豫西"三软"煤层煤体位移、应力分布、渗透率的影响。研究结果表明,水力冲孔与压裂耦合致裂增透技术可以使水力冲孔泄煤钻孔间煤体应力降低20%以上、渗透率提高35%以上;告成矿23041下副巷(北)揭煤工作面穿层钻孔平均抽采浓度较相同瓦斯地质条件提高4.3倍,日平均抽采纯瓦斯量较相同瓦斯地质条件提高6.7倍,研究成果可推广应用于郑州矿区底板岩巷穿层钻孔预抽煤层瓦斯区域防突措施。
By means of numerical analysis and field engineering test, the hydraulic punching and hydraulic fracturing coupling permeability improving technique is studied, which affects the ＂three soft＂ coal seam displacement, stress distribution and permeability. Research results show that the hydraulic punching and hydraulic fracturing coupling permeability improving technique is able to reduce the stress in coal more than 20% and increase the permeability of coal more than 35%. The average pumping gas concentration of 23041 roadway（north） in Gaocheng Mine that uncovers coal seam is 4. 3 times higher and the average daily pumping gas is 6.7 times higher than that of the same gas geological conditions. The research finding can be popularized and applied to the regional prevention measures of the through beds boreholes in Zhengzhou Mining Area.
出处
《煤矿安全》
北大核心
2017年第11期71-75,共5页
Safety in Coal Mines
关键词
煤矿安全
瓦斯抽采
水力冲孔
水力压裂
耦合增透
coal mine safety
gas drainage
hydraulic punching
hydraulic fracturing
coupling permeability improving
