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研究了沙质河床清水冲刷粗化机理，即它不是靠推移质冲刷，而主要是靠悬移质冲刷，在粗化过程中产生沙波，形成与水、沙条件相适应的稳定的沙波运动，建立新的平衡．据此，提出了沙质河床粗化物理模式和计算方法．
The mechanism of water scouring and roughening in sandy river bed was studied. It is not scouring by pusher but mainly by suspended sediment scouring, which produces sand wave in the roughening process to form a stable sand wave that is compatible with water and sand conditions Exercise, establish a new balance. Based on this, the physical model and calculation method of sandy riverbed coarsening are proposed.