关于“利用水沙关系式来计算冲淤分界流量”的讨论

“大水冲刷，小水淤积”是冲积性河流普遍存在的理象。如何确定大小水的界限，也就是分界流量的大小，参考文献［１］曾利用水沙关系式联立的方式进行求解，本文就此方法的可行性作一讨论。

ON THE DISCUSSION OF"CALCULATING THE CRITICAL DISCHARGE BY THE RELATION BETWEEN SEDIMENT DISCHARGE AND DISCHARGE

The Author thinks that it is discussible to calcaulate the critial discharge by using the relation,Q_s=kQ_m, in two stations. where Q_s is sedimemt discharge, Q is discharge, k is coefficient. and m is exponent.The reasons are 1) the values of m and k vary intensive, which have the relations with sediment concentration, slope, and morphology of the river, and the values of the above three vary in a large range also . 2) between two stations the discharges are not equal at the same time . 3) the calculated values of discharges will vary largely, when the values of m in two stations are similar.