床沙粗化研究的回顾

Research on The Roughening of a River Bed

本文综述了已有床沙粗化的研究成果,包括床沙祖化的类型、床面可动层、粗化层的形成机理、粗化层的特性、粗化层的级配计算、粗化层的稳定性判别及河床极限冲刷深度的计算,并用水槽及天然资料对粗化层级配计算方法作了简要评述。指出了尚有待改进的地方及今后着重开展的工作。

This paper makes research on the present results of roughening of a river bed, including classification of roughening, movable layer of river bed. mechanism of formation of roughening layer and its characteristics, computation of gradation composition of the roughening layer, stability discrimination of roughening layer, as well as the computation of limit eroded depth.By use of water channel and natural data, the a.athor makes further comment on the computation methods of graded composition of roughening layer, and points out that some improvement works should be done furthermore.