Equivalent grain size

Using scour data downstream of the spillway obtained from prototype observation of a completed project, an inverse model test is conducted so as to determine the proper equivalent particle sizes of scour resistance in the model.

应用已建工程的冲刷原型观测资料，进行模型返演试验，确定该工程溢流坝下游岩基的抗冲当量粒径。