全尾砂充填料浆管道阻力损失探究及优化

充填采矿技术因其自身的特点，在矿山领域得到了大力推广，确定合理的充填料浆配比方案和充填系统管道输送技术参数，是确保整个充填系统能够安全、高效和稳定运行的重要前提。以唐山某铁矿为例，选择灰砂比1∶8的充填料浆为试验对象，以140 mm、160 mm、180 mm、200 mm、220 mm、240 mm、260 mm为试验管道直径，分别配比浓度为68%、70%、72%、74%的充填料浆，对充填料浆管道阻力损失影响因素进行分析，并对其进行优化。研究结果表明：管道阻力损失与管径呈反比例函数关系，料浆浓度越高，管道阻力损失越大；管径增大到240 mm和260 mm时，管道底部料浆流速过快，会加速底部管道磨损；为实现矿山生产中的采充平衡，建议该矿山输送管径为200 mm或220 mm，料浆输送浓度为70%。

Investigation and Optimization of Pipeline Resistance Loss of Full Tailings Slurry

Because of its own characteristics， the filling mining technology has been vigorously promoted in the mining field， and the determination of reasonable filling slurry ratio scheme and technical parameters of pipeline transportation in filling system is an important prerequisite to ensure the safe， efficient and stable operation of the whole filling system. Taking an iron mine in Tangshan as an example， the filling slurry with a lime-sand ratio of 1∶8 was selected as the test object， the diameters of the test pipeline 140 mm， 160 mm， 180 mm， 200 mm， 220 mm， 240 mm and 260 mm， and 68%， 70%， 72% and 74% of the filling slurry concentration are respectively selected to analyze the factors affecting the resistance loss of the filling slurry pipeline. The results show that the pipeline resistance loss is inversely proportional to the pipe diameter， and the higher the slurry concentration， the greater the pipe resistance loss； When the pipeline diameter increases to 240 mm and 260 mm， the slurry flow velocity at the bottom of the pipeline will be so rapid that the bottom pipeline is easily worn； In order to achieve the balance of mining and filling in the mine production， it is suggested that the pipe diameter of the mine be 200 mm or 220 mm， and the slurry transport concentration be 70%.