基于环管试验的粗骨料膏体管输阻力模型及优化  

Transportation Pressure Model and Optimization of Coarse Aggregate Paste Backfill Based on Pipe Loop Test

作　　者：杨晓炳[1,2,3] 闫泽鹏 尹升华 杨航[2] YANG Xiaobing;YAN Zepeng;YIN Shenghua;YANG Hang(School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China;State Key Laboratory of Mineral Processing,Beijing 102628,China;Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education(University of Science and Technology Beijing),Beijing 100083,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]矿物加工科学与技术国家重点实验室,北京102628 [3]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083

出　　处：《湖南大学学报（自然科学版）》2022年第5期181-191,共11页Journal of Hunan University:Natural Sciences

基　　金：中央高校基本科研业务费专项资金资助项目(FRF-TP-20-039A1);矿物加工科学与技术国家重点实验室开放基金资助项目(BGRIMM-KJSKL-2021-18);中国博士后科学基金资助项目(2021M690363);山东省重大科技创新工程项目(2019SDZY05)。

摘　　要：为探明粗骨料膏体的管输阻力特性,开展了关于粗骨料膏体输送特性的工业级环管输送试验,利用白金汉方程对环管数据拟合处理后获得膏体的实际流变参数,并建立了基于流动度测试的粗骨料膏体阻力方程.通过响应面分析法(RSM-BBD)对膏体输送行为进行分析,分别得到单因素和多因素耦合对阻力损失的影响规律,并优化了粗骨料膏体的管道输送参数.结果表明:流变测试得到的流变参数普遍大于环管拟合参数,其中屈服应力相差10.4%~12.2%、塑性黏度相差21%~32.8%.通过响应面分析得到了单因素对阻力损失影响的敏感程度为质量分数>管径>流量,并发现因素间的交互作用影响显著,其中质量分数和管径的交互影响起到决定性作用.以金川实际充填需求为背景采用响应面优化后的输送参数为:管径220 mm、流量142.4 m^(3)/h、质量分数73.2%.研究成果可为粗骨料膏体充填系统运行参数的选取提供参考.To determine the pipe pressure drop characteristics in the coarse aggregate paste backfill(CPB)process.An industrial-scale loop test on the transportation characteristics of CPB was carried out.The actual rheological parameters of CPB are obtained by fitting the Buckingham equation to the loop test data,and the resistance equation was established based on the fluidity test.The response surface method(RSM-BBD)was used to analyze the transportation behavior of the CPB,and the effects of single-factor and multi-factor coupling on the pressure loss were obtained,respectively.Finally,RSM-BBD was used to optimize the pipeline transportation parameters of CPB.The results show that the rheological parameters obtained by the rheological test were generally larger than those obtained by the loop test,where the differences in yield stress and plastic viscosity between the two are 10.4%~12.2%and 21%~32.8%,respectively.Response surface analysis showed that the sensitivity of a single factor on pressure loss was as follows concentration>pipe diameter>flow rate.And it was found that the interaction between factors had a significant effect,in which the interaction between mass fraction and pipe diameter played a decisive role.Taking the actual filling demand of Jinchuan as the background,the transport parameters optimized by response surface were as follows:pipe diameter 220 mm,flow rate 142.4 m^(3)/h,and concentration 73.2%.The research results are of great significance to the selection of the CPB system operating parameters.

关 键 词：粗骨料膏体 管输阻力 环管试验 流变特性 响应面分析 

分 类 号：TD862.2[矿业工程—金属矿开采]