非均匀水流对挟沙能力的影响

Sediment-carrying capability of water flow means the maximum capability of water flow to carry sediment. It is one of the key problems on the sediment research. According to one-dimensional basic equations (continuitied equation and momentum equation) of water flows, the sediment-carrying capability formula is improved under considering the nonuniformity of water flows in this paper. Based on the measured data of the sediment-carrying capability of Tuchengzi experimental section in the Lower Yellow River, the coefficients of the formula are determined by using the numerate method combined with the least square method. Through the comparison analysis, the results show that the improved formula has higher precision, and can better reflect the sediment-carrying capability of water flows.