高位差输送全尾砂浆体的水力计算研究  

Study on Hydraulic Calculation for Transporting Total Tailings Slurry at High Head Difference

作　　者：张鹏[1] 赵宏胜 郭金峰[1] 胡永泉[1] 徐志宏[1] 林晓飞[3] 

机构地区：[1]中钢集团马鞍山矿山研究院 [2]陕西汞锑科技有限公司 [3]山东科技大学

出　　处：《金属矿山》2008年第2期25-29,共5页Metal Mine

摘　　要：全尾砂充填是目前充填技术发展的主要趋势,而关于全尾砂的水力计算国内外研究者做了大量的试验工作,得出了不同形式的经验公式。详细介绍了全尾砂输送的计算过程,首先对尾矿的性质进行试验,确定尾砂出选厂时的体积比、密度、平均粒径、沉降速度,然后确定一定的流量和临界流速及相应的输送管道管径,从而确定水力坡度、摩擦阻力系数,最后根据流量、扬程和总水头确定水泵,同时在计算过程中解释了相关的概念,根据实际情况推荐了合理的计算公式。与传统的多方案比较法相比,该高位差输送全尾砂浆体的水利计算方法具有计算简便、准确的优点,此法对一般的管道输送方案优化也具有指导意义。Total tailings backfilling is currently the main development trend of backfilling technology. And the researchers both at home and abroad have done intensive trial work on hydraulic calculation for total tailings, and have found empirical formulas of different forms. This paper describes in detail the calculation process for entire tailings transport： firstly, to make a test on the nature of the tailing so as to determine its volume ratio, density, average particle size, settling velocity when it leaves the concentrator ; then to determine the flowrate, critical velocity and the relevant pipeline diameter in order to determine the hydraulic gradient and friction coefficient; and finally, to decide on the pumps to be used according to the flowrate, lift and total head. In the meantime of calculation process description, the paper also explains the relevant concepts and recommends a reasonable formula according to the actual situation. Compared with the conventional multischeme comparison method, this method of hydraulic calculation for transporting total tailing slurry at high head difference has the advantage of simple and accurate calculation. It is also of guiding significance to the optimization of general pipeline transport schemes.

关 键 词：尾砂输送 水力计算 临界沉降流速 水力坡度管路阻力 

分 类 号：TD853.342[矿业工程—金属矿开采] TV131.4[矿业工程—矿山开采]