中文摘要：

对明槽输沙水槽进行了设计计算。按矿浆特性进行了分析研究,结果表明,对于细颗粒组成的不易沉降的稳定矿浆,明槽输沙在雷诺数较大时可近似采用谢才公式计算;对于含粗颗粒沉降较快的矿浆,不能简单采用谢才公式计算,应首先计算明槽挟沙能力。

英文摘要：

A calculation was conducted for sand transportation by water trough in open trench,based on characteristics of slurry. It is found that for slurry composed of fine particles being difficult to settle,a calculation method with Chezy formula can be adopted when the Reynolds number is large for sand transportation in open trench. However,as for the slurry containing coarse particles with a high settling velocity,a sand-carrying capacity of open trench shall be calculated first,instead of simply adopting Chezy formula.