水力压裂影响范围数值模拟研究  

Numerical Simulation Study on the Scope of Hydraulic Fracturing Effect

作　　者：姜秀雷[1] 孟杰[1] 陈延可[1] 刘宪正[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001

出　　处：《煤矿安全》2013年第2期3-6,共4页Safety in Coal Mines

摘　　要：为了对水力压裂措施压裂煤层裂缝的起裂效果在直观上有一个感性的认识,采用RF-PA2D-Flow软件对平煤集团十矿己15-31010工作面进行数值模拟。模拟软件清晰地展现了水力压裂时裂缝的起裂、扩展和延伸的过程,并且通过对抽采孔和压裂孔孔间距分别为5、6、7 m时进行数值模拟,模拟结果表明:煤体经水力压裂后,透气性发生了明显的变化,透气系数增大到4～6倍左右,最高能增大到近10倍,增透效果明显,另外还表明:在煤体硬度、水压、钻孔直径等因素一定的条件下,水力压裂的影响范围是一定的。In order to observe crack initiation effects of hydraulic fracturing measures in fracturing coal seam crack in an intuitive, RF- PA2D -Flow software to simulate the working face 31010 in Pingmei No. 10 Mine ten mine is adopted. Simulation software clearly shows the hydraulic fracture crack initiation, expansion and extension. Through the numerical simulation of the drainage holes and pressure hole with hole spacing of 5 m, 6 m, 7 m, the simulation results show that after the hydraulic fracturing on the coal seam, permeability changes apparently, the coefficient of permeability increases 4-6times, the highest increases to nearly 10 times, increasing permeabil-ity effect is obvious. The results also show that the coal hardness, water pressure, the hole diameter and other factors under certain conditions, the hydraulic fracturing effect is certain.

关 键 词：水力压裂 数值模拟 模拟软件 压裂措施 平煤集团 FLOW 透气系数 钻孔直径 

分 类 号：TD713[矿业工程—矿井通风与安全]