摘要
本文题目为排沙能力的统计模型是基于输沙平衡方程式,文章叙述影响河段排沙能力α,即下站与上站输沙率之比,其主要因素为:①上河段排沙比(α_0);②来沙粒径(di);③本河段水流调蓄流量(△Q);④本河段前期淤积量(Σ△W_3);⑤来沙粒径不均匀系数(σd). 本河段排沙能力的统计模型表示为式中 A.B,C,D.E,T—待定系数,即多元回归系数. 文章例举黄河花园口及高村站年输沙率公式及其验算成果。其均方差误差为1～5％。
Sluicing Capacity of a river reach(α), namely, the ratio of sediment discharge at outlet station to that at inlet station, is influenced by following major factors: sluicing capacity of the upper reach (α_o), grain size (d_i), channel storage of the studied reach(△Q), accumulated deposition in earlier periods (Σ _0^(n-1)△W_s) and nonuniformity coefficient of grain size (σ_d). The author established a regression statistic model of snspended sediment sluicing capacity based on sediment balance equation : in which, A、B、C、D、E and γ are coefficients to be determined by multiple regression analysis. By using the observed data of Huayuankou and Gaocun stations, the proposed model was verified. The variance of root-mean-square error is 1- 5% for the Yellow River.
出处
《泥沙研究》
CSCD
北大核心
1993年第4期32-41,共10页
Journal of Sediment Research
