水库淤积泥沙干容重分布规律及其计算方法的研究

泥沙干容重是反映泥沙重力特性的一个非常重要的物理指标，现有计算干容重的经验半经验公式存在着使用不便、适用范围窄等问题。本文通过对水库实测干容重资料的分析，阐明了水库泥沙干容重的分布规律，引入浑限空隙率的概念建立了初始干容重、稳定干容重及淤积过程干容重的计算公式，验证计算表明公式具有较高的精度和准确度。

Study on distribution and calculation method of reservoir sediment dry bulk density

Dry sediment bulk density is an important physics index to reflect sediment gravity character. Current dry sediment bulk density calculation formulas are empirical. They are difficult to be applied. In this paper, the field data of the dry bulk density in reservoirs and its distribution regular are analyzed. By introducing the concept of muddy-limit void ratio, the calculation formulas of initial dry bulk density and stable dry bulk density and deposit process dry bulk density are proposed, The calculated results are in close agreement with field observation.