工程类比法探讨岩基冲刷模拟试验

Study on Anti Scour Test in Rock River Bed by Project Comparison Method

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。将待建工程的基岩条件与之类比，分析选定该待建工程基岩的抗冲当量粒径，再进行冲刷模拟试验，以预报工程完建运行后可能会发生的坝下冲深。

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. Comparing rock foundamental properties of completed and unbuilt projects, the equivalent particle sizes of scour resistance in the model for the unbuilt projects are estimated. Then, by use of these particle sizes, the scour model test can be made to predict directly possible scour depth downstream spillway.