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1 问题的提出在多年的生产实践和教学过程中,总感觉《水文测验手册》和所使用的《水文测验》教材中对悬移质日平均输沙率计算方法的描述不太恰当,最近对此方法进行了分析研究,发现该问题的提法确有不当之处。2 目前悬移质日平均输沙率计算方法的描述2.1 《水文测验手册》中的描述:用流量加权计算日平均输沙率的方法有两种:第一法是,以瞬时流量乘以相应时间的断面平均含沙量,得出各次输沙率,再用时间加权求出平均值,作为日平均输沙率。其公式为:
PROBLEM PROBLEMS In the course of many years of production practice and teaching, it is not appropriate to describe the method of calculating average suspended sediment transport rates in the Handbook of Hydrological Tests and the Hydrological Tests used. This method has been analyzed and found that the problem of reference is indeed inappropriate. 2 Description of the method for calculating the average daily sediment transport rate 2.1 Description of the Hydrographic Manual: There are two methods for calculating the average daily rate of sediment transport using the flow rate weighted method. The first method is to multiply the instantaneous flow rate by the corresponding Time cross-section average sediment concentration, arrived at various times the sediment transport rate, and then calculate the average time-weighted, as the average daily sediment transport rate. The formula is: