泥沙干容重的预测计算  

Prediction model of sediment dry density

作　　者：王兵 詹磊[2] 殷俊 凌小凤 陈丽娜[4] 

机构地区：[1]山西省汾河中下游水务管理局,太原030002 [2]长江航道测量中心,武汉430010 [3]武汉科梦环境工程有限公司,武汉430074 [4]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《水道港口》2010年第5期352-356,共5页Journal of Waterway and Harbor

基　　金：国家科技支撑计划项目(2006BAB05B03);国家自然科学基金项目(50679065)

摘　　要：从浑水容重与浆体浓度的理论关系式出发,基于微量变化原理,将其应用于床面含泥浓度较高的情况,并进一步将浑水容重与泥沙干容重以及河底当量浓度与浆体极限浓度等联系起来,获得了包含有泥沙粒径、级配等因素在内的非均匀沙干容重计算公式。验证计算表明,计算结果与实测资料基本一致。Based on a theory of micro-variation concept model,the theory relationship between turbid water density and slurry concentration was successfully applied to the complicated situation of near-bed sediment transport with high concentration. What′s more,the potential relation between turbid water density and sediment dry density as well as the relationship between near-bed mean concentration and limiting concentration were put forward.Then an equation to calculate dry density of non-uniform sediment which includes the main effect factors of dry density such as the sediment diameter and gradation was deduced.The verification results show that the calculated result by the equation established in this paper agrees well with the observation data.

关 键 词：微量变化原理 泥沙干容重 浑水容重 浆体极限浓度 

分 类 号：TV141.1[水利工程—水力学及河流动力学]