感潮时段的推流方法探讨——以石角水文站2011年汛后枯水期为例

Discussion on Method of Discharge Computation in Tidal Time——with Low-flow Period after Flood Season (2011) of Shijiao Hydrometric Station as an Example

2009年枯水期,石角站开始采用清远(三)站相应水位与该站实测流量定线推流,解决感潮为流量资料整编带来的难题。2011年11月,随着上游清远水利枢纽的蓄水,相应水位法已无法使用。为了解决该问题,探讨感潮时段的流量推求方法,建立了石角—三水(二)站日平均水位差与日平均流速之间的关系。结果表明,确定上下游站日平均水位差与日平均流速关系的方法是可行的。

Shijiao Hydrometric Station began to use equivalent stage of Qingyuan （3） station and measured discharge on discharge computation to solve the new problems on discharge data processing which were brought by the tidal hy- drometry section in the low-flow period in 2009. In November 2011, with the storage of Qingyuan water conservancy hub, the method of equivalent stage Can not be used. In order to solve this problem, this paper discusses the method of discharge computation in tidal time and studies the relation between daily mean fall of Shijiao-Sanshui （2） station and daily mean velocity. The results show that the way of setting up the relation between daily mean fall of up-downstream and daily mean velocity is feasible.