全尾砂似膏体管输水力坡度计算模型研究  

Pipeline hydraulic gradient model of paste-like unclassified tailings backfill slurry

作　　者：陈秋松[1] 张钦礼[1] 王新民[1,2] 徐丹[3] 肖崇春[1] CHEN Qiusong ZHANG Qinli WANG Xinmin XU Dan XIAO Chongchun(Central South University, School of Resources and Safety Engineering, Changsha, Hunan 410083, China Hunan Zhongda Design Institute Co ltd, Changsha, Hunan 410075, China China National Gold Group Corporation, Beijing 100011, China)

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]湖南中大设计院有限公司,湖南长沙410075 [3]中国黄金集团公司,北京100011

出　　处：《中国矿业大学学报》2016年第5期901-906,共6页Journal of China University of Mining & Technology

基　　金：国家"十二五"科技支撑计划项目(2012BAC09B02)

摘　　要：为了解决全尾砂似膏体管道输送的水力计算问题,利用Bingham流变模型分析全尾砂似膏体管道输送过程的流变特性,通过FLUENT流体分析软件三维模拟浆体管输过程,得到不同质量分数下浆体的流变参数,并采用MATLAB软件回归得到流变参数与浆体质量分数的关系式,进而推出基于管道内径、平均流速和浆体质量分数的全尾砂似膏体水力坡度计算新模型.结果表明:水力坡度与管道内径成反比,与充填料浆的平均流速成正比,且在管径和流速可调的前提下,水力坡度的大小取决于似膏体的流变参数.环管实验表明新模型的平均误差在6%左右.In order to study the hydraulic issue of paste-like unclassified tailings backfill slurry transported by a pipeline system, the rheological behavior of paste-like was analyzed with Bingham model, the rheological parameters in different slurry mass fractions were obtained through aD simulation in FLUENT, then, a pipeline hydraulic model of paste-like relating to inner diameter, average velocity and slurry mass fraction were constructed using MATLAB. The results show that the hydraulic gradient is inversely proportional to the pipe diameter, and proportional to average velocity of backfill slurry. The calculation error of this model can be controlled in 6% proved by annular pipeline test.

关 键 词：全尾砂 似膏体 水力坡度 数值模拟 回归分析 

分 类 号：TD853[矿业工程—金属矿开采]