摘要
理论分析确定单孔破碎区半径,以现场煤岩力学参数为依据,建立数学模型,采用数值方法对不同孔径高压水射流扩孔过程进行模拟,结合单孔破碎区半径及现场穿岩层钻孔试验研究结果比较分析。结果表明高压水射流扩孔效果明显,是一个经济可行的技术途径技术,为提高低透气性煤层的瓦斯抽放效果提供了有效途径。
The simulation analysis on different apertures that are expanded using high - pressure waterjet is carries out by adopt numerical method ,it is comparatively analyzed combining with crack area of the radius and the results of scene experiment. Our finding are： technique of high - pressure waterjet expanding borehole is one of economic methods provided on improving effect of gas drainage from Low permeability of coal seam.
出处
《煤矿安全》
CAS
北大核心
2009年第4期4-7,共4页
Safety in Coal Mines
关键词
高压水射流
扩孔
RFPA^2D
数值模拟
high - pressure water - jet
expanding pore
RFPA^2D
numerical simulation
