The method was adapt broad crested weir theory derivation to calculation flood rate of discharge and conjecture design rate of discharge through field investigate information of bridge.
该计算方法是通过实地调查桥前水深等资料，采用严密的宽顶堰理论推导，求得洪水流量，进而推求设计流量。
In a digital weir, open loop digital control is applied, and the method is simple and reliable. And it can give accurate flow according to the given process curve.
数字量水堰是开环控制方式，方法简便可靠，可以按给定的过程曲线精确可靠地施放流量。
However, the above method is not applicable for the gate chamber when the foundation of weir body is "high-low foot".
然而对于堰体基础呈“高低脚”的闸室，该方法很不适用。
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