伴有滑动床的大颗粒水沙浆体浓度分布研究

发布时间：2018-03-08 03:12

本文选题：大颗粒　切入点：浆体管道　出处：《泥沙研究》2017年05期 　论文类型：期刊论文

【摘要】：在作者前期研究及相关学者的研究成果的基础上,推导出了基于两层模型的滑动床上方水沙浆体浓度分布计算模型,进一步结合剪切层浓度线性分布特点,给出了考虑剪切层的三层浓度分布计算模型。通过粒径为1.71 mm的粗砂颗粒高浓度管道流动试验,测定了水平管道和倾斜管道中不同条件下若干组大颗粒浓度分布随倾角变化的试验数据。浓度分布实测值与作者浓度分布模型计算值对比分析表明,三层浓度计算模型较两层浓度模型,能够较为准确预测滑动床上方的粗颗粒浓度分布情况。
[Abstract]:On the basis of the previous research by the author and the research results of relevant scholars, a two-layer model for calculating the concentration distribution of water slurry over the sliding bed is derived, which further combines the characteristics of the linear distribution of the shear layer concentration. The calculation model of three-layer concentration distribution considering shear layer is given. The flow test of high concentration pipeline with coarse sand particle size of 1.71 mm is carried out. The experimental data of several groups of large particle concentration distribution varying with inclination angle under different conditions in horizontal and inclined pipelines are measured. The comparison between the measured values of concentration distribution and the calculated values of the author's concentration distribution model shows that, Compared with the two-layer concentration model, the three-layer concentration calculation model can accurately predict the distribution of coarse particle concentration above the sliding bed.
【作者单位】：辽宁工程技术大学矿业学院采矿工程系;中煤科工集团武汉设计研究院有限公司管道输煤所;
【基金】：中煤科工集团有限公司青年基金项目(2014QN040)
【分类号】：TV131.61

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