矿山充填料管道挤压输送计算机模拟  

Computer simulation of squeezed-transport of mine hydraulic filling in pipeline

作　　者：何哲祥[1] 隋利军[1] 解伟[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2008年第6期1144-1151,共8页Journal of Central South University:Science and Technology

基　　金：国家重点科技攻关计划项目(85-116-03-02-04)

摘　　要：为了研究矿山充填料管道挤压输送料浆的运动规律,在假定挤压输送设备活塞由曲柄连杆机构驱动的条件下,推导出活塞位移呈三角函数形式的料浆运动相关方程,以及在挤压输送设备作用下,入口管道和出口管道内料浆的8种运动状态的速度和加速度计算公式。运用计算机模拟管道长度、管道垂高、充填料浆浓度及料浆流变力学参数、活塞运动周期与曲柄半径等不同时,管道内料浆的流动规律。研究结果表明:挤压输送的起始条件仅对前几个周期内料浆的运动有影响;调整充填管道长度、管道垂高、充填料浆浓度和流变参数、挤压输送设备活塞运动周期、曲柄半径和安装位置(入口管道长度)等其中的任何1个参数,对管道内料浆的流动状态均会产生影响,但对于给定的充填管路和充填料浆,总能找到使入口管路和出口管路内料浆的流动速度大于0m/s的相关参数,实现充填料浆挤压输送。In order to investigate the flow states of filling slurry in squeezed-transport, assuming that the piston of squeezed-transport device was driven by crank-connecting rod mechanism and displacement of the piston was expressed as trigonometric function, the related equations were deduced. Eight expressions of calculating velocity and acceleration were also deduced for entrance pipeline and exit pipeline respectively under the force of squeezed-device. The flowing states of slurry inside pipeline were simulated under the conditions of varying pipeline networks, characteristics of slurry, installation position of squeezed-device and movement cycle of piston by computer. The results show that the starting situation of squeezed-transport device has an effect on flow of fill slurry within only a few initial cycles. Flowing states inside pipeline vary with variation of any parameter such as length of pipeline, physics characteristics and rheology of slurry, installation position, etc. However, for a given backfill system and slurry, the related parameters can always be established, at which the velocities of slurry inside both entrance pipeline and exit pipeline keep positive, and the slurry can be transported by the squeezed-transport method.

关 键 词：矿山充填 水力输送 挤压输送 计算机模拟 

分 类 号：TD853[矿业工程—金属矿开采]