基于ANSYS-FLUENT的云南某锡矿尾砂料浆管道输送设计研究

Research on pipeline transportation design of tailings slurry from a tin mine in Yunnan Province based on ANSYS-FLUENT

以云南某锡矿井下充填管道为对象,经流变实验获得了该矿山全尾砂流变参数,并采用布金汉方程对尾砂料浆阻力损失进行了初步计算,最后运用ANSYS-FLUENT软件进行了模拟计算,并对模拟结果进行了深入分析。结果表明,较优方案为C1,即水泥量为300 kg/m^(3),质量浓度为72%的尾砂料浆能够在管道内安全输送2600余米,充填流量可达110 m^(3)/h,满足了矿山井下充填制备站至各采场空区的充填需求,确保了充填系统的安全、可靠和高效运行。进一步研究分析发现,在管道内输送的尾砂料浆速度和压力存在边界层效应;管输阻力损失随尾砂料浆的屈服应力及黏度的增加而增加,并得出了阻力损失与屈服应力及黏度之间的关系表达式。本文针对充填采矿法中矿山尾砂料浆合理、安全地管道输送,制定了简便高效的计算、模拟和分析方法,为充填采矿法的实际应用提供了有益指导。

Taking the filling pipeline under a tin mine in Yunnan Province as the object,this article obtained the rheological parameters of the entire tailings of the mine through rheological experiments,and preliminarily calculated the resistance loss of the tailings slurry using the Buckingham equation.Finally,simulation calculations were conducted using ANSYS FLUENT software,and the simulation results were analyzed in depth.The research results indicate that the optimal solution is the C1 scheme,which means that the tailings slurry with a cement content of 300 kg/m^(3) and a mass concentration of 72%can be safely transported within the pipeline for over 2600 meters,and the filling flow rate can reach 110 m^(3)/h,which meets the filling requirements from the underground filling preparation station to various goaves in the mine and ensures the safe,reliable,and efficient operation of the filling system.Further research and analysis have found that the velocity and pressure of the tailings slurry transported in the pipeline have a boundary layer effect.The resistance loss of pipeline transportation increases with the increase of yield stress and viscosity of tailings slurry,and the relationship expression between resistance loss and yield stress and viscosity is obtained.This article develops a simple and efficient calculation,simulation,and analysis method for the reasonable and safe pipeline transportation of tailings slurry in the filling mining method,providing technical guidance for the practical application of the filling mining method.