回采巷道锚注加固浆液渗流规律研究  

Study on Slurry Seepage Law in Surrounding Rocks of Roadways Reinforced by Blot- grouting

作　　者：张华磊[1] 涂敏[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：《安徽理工大学学报（自然科学版）》2013年第4期20-25,共6页Journal of Anhui University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(51074004);安徽省自然科学基金重点资助项目(11040606M102);安徽理工大学青年教师科学研究基金资助项目(2012QNZ14)

摘　　要：为了获得回采巷道锚注加固工程中合理的注浆压力，首先将回采巷道围岩破碎区看作连续介质，并应用渗流理论得出了浆液在破碎围岩中扩散的基本方程，并建立了COMSOI数值计算模型，研究了不同注浆压力条件下的浆液流动扩散特征。结果表明：对于回采巷道锚注支护工程，浆液在垂直于钻孔方向的扩散深度明显大于浆液在垂直于钻孔方向的扩散半径，合理的注浆压力约为1．0—3．0MPa，并将研究成果用于桃园煤矿回采巷道锚注支护设计，取得了良好的效果。In order to get reasonable grouting pressure in roadway bolt - grouting reinforcement engineering, cracking zone in surrounding rocks is regarded as continuous medium, and the basic equations of slurry diffusion in cracked surrounding rocks were obtained based on the seepage theory. The COMSOL numerical calculation model was established to study the slurry flow diffusion characteristics under different grouting pressures. The re- sults showed that for roadway bolt - grouting reinforcement engineering, slurry diffusion depth in the direction perpendicular to the borehole is significantly greater than diffusion radius in the direction perpendicular to the borehole, and the reasonable grouting pressure is about 1.0 - 3.0 MPa. The results were applied to design of roadway bolt -grouting reinforcement in Taoyuan Coal Mine, and the good effect was achieved.

关 键 词：锚注 浆液渗流 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]