固体物料的管道水力输送,在工业部门日益广泛应用。铜、铁精矿和煤的长距离管道水力输送,近年来发展迅速。我国也已开展了这方面的试验研究工作。管道水力输送的基本技术问题,是在固体输送量、输送距离和高差一定的条件下,选择恰当的管径、浓度、粒级和流速,以达到能量消耗低、经济效果好的目的。衡量能量消耗的一个重要尺度是管道输送的水力坡度。管道水力坡度的计算,我国一直沿用克诺罗兹公式。由于生产实践证明,其计算值过于偏大,不 Hydraulic transmission of solid material pipes is increasingly used in the industrial sector. Copper, iron ore and coal long-distance pipeline hydraulic transport, developed rapidly in recent years. China has also carried out experimental research in this area. The basic technical problem of pipeline hydraulic transportation is to select the proper pipe diameter, concentration, particle size and flow rate under the conditions of constant conveying volume, conveying distance and height difference so as to achieve the purpose of low energy consumption and good economic effect. An important measure of energy consumption is the hydraulic gradient of pipelines. The calculation of pipeline hydraulic gradient, our country has been using Knoks formula. As the production practice has proved that its calculated value is too large, no