摘要
为了研究粗砂浆体水平管道流动水力坡度预测问题,通过分析和计算颗粒运动受力平衡关系,提出添加修正系数来修正干涉力的研究方法,并采用若干专家学者的试验数据,拟合出了修正系数的表达式.在此基础上,利用等效阻力模型,给出了粗砂水平管道流动水力坡度的计算模型,并借助相关学者的试验数据对该模型进行了检验.结果表明,模型计算值与实测值的偏差均小于10%,且考虑修正系数后,水力坡度的计算值相对增大,更加接近实测值.说明粗砂颗粒浆体管道中颗粒干涉力需要修正,且由此提出的粗砂颗粒水力坡度模型对于研究粗砂浆体管道输送技术具有一定参考价值.
In order to study the predication of hydraulic gradient for coarse sand slurry in the horizontal pipe, based on the analysis and calculation of the coarse sand particle＇s balance relationship in the horizontal pipe, by adopting a research method of adding a correction factor L before interference force is put forward, and by using related experts＇ experimental data and through data fitting, an expression of correction coefficient L is given out. Based on this, by using an efficient resistant model, a hydraulic gradient calculation model for coarse sand slurry in the horizontal pipe is developed. The calculation model is verified by related experts＇ experimental data and it is found out that the deviation between the calculated values by author＇s model and the measured values is not more than 10%, and that after considering the correction factor L, the model-calculated values will relatively increase and move closer to the measured values. So in the coarse sand slurry pipeline, the interference force acting on coarse particles needs to be revised by correction factor, thus the hydraulic gradient calculation model put forward for coarse sand slurry can give a certain reference to the study of the transport of coarse sand slurry in pipes.
出处
《水利水运工程学报》
CSCD
北大核心
2013年第1期71-75,共5页
Hydro-Science and Engineering
关键词
浆体
水力坡度
粗砂
水平管道
slurry
hydraulic gradient
coarse sand
horizontal pipe
