矽卡岩型矿床帷幕注浆浆液扩散半径的关键影响因素  

Effect of Crucial Factors on Slurry Diffusion Radius of Curtain Grouting in Skarn Deposit

作　　者：张嘉芮 余建国 田昌贵[1] 贾金龙[1] ZHANG Jiarui;YUJianguo;TIAN Changgui;JIA Jinlong(School of Resources and Safety Engineering,Wuhan Institute of Technology,Wuhan 430205,China;Mining Branch Daye Non-Ferrous Metals Mining Limited,Daye 435100,China)

机构地区：[1]武汉工程大学资源与安全工程学院,湖北武汉430205 [2]大冶有色金属有限责任公司矿业分公司,湖北大冶435100

出　　处：《武汉工程大学学报》2023年第1期106-110,共5页Journal of Wuhan Institute of Technology

基　　金：湖北省自然科学基金(2020CFB2201);武汉市知识创新专项项目(曙光计划)。

摘　　要：以鲤泥湖铜铁矿床为研究对象,采用多物理场耦合两相流数值模型,模拟研究静水条件下浆液密度、注浆压力等关键因素对水泥尾砂浆浆液扩散半径的影响。研究结果表明:在静水条件下,浆液密度从1 270 kg/m^(3)增大到1 680 kg/m^(3)时,浆液扩散半径由6.775 m减小至6.168 m;注浆压力从4 MPa增加到10 MPa时,浆液扩散半径由6.674 m增大至6.988 m。最后,通过数值模拟研究分析得到影响浆液扩散半径关键因素的最优组合,提出了浆液密度1 560 kg/m^(3)、注浆压力8 MPa、注浆孔间距8 m的帷幕注浆合理方案。To investigate the effects of slurry density and grouting pressure on the grouting diffusion radius of cement mortar under the static water condition,a numerical simulation study was conducted by using the twophase flow model coupled with multi-physical fields for the Linihu copper-iron deposit. The results indicate that the slurry diffusion radii decrease from 6.775 m to 6.168 m with slurry densities from 1 270 kg/m^(3) up to 1 680 kg/m^(3),and the slurry diffusion radii increase from 6.674 m to 6.988 m with grouting pressures from 4 MPa up to 10 MPa. Finally,the optimal combination of crucial factors affecting slurry diffusion radius is achieved by the analysis of numerical simulation,and a reasonable scheme is proposed for curtain grouting,in which the slurry density,grouting pressure,grouting hole spacing are 1 560 kg/m^(3),8 MPa,and8 m,respectively.

关 键 词：浆液密度 注浆压力 扩散半径 数值模拟 帷幕注浆 

分 类 号：TD265[矿业工程—矿井建设]