三峡水库蓄水后上下游站水文资料整编优化分析

Analysis of compilation optimization of hydrological data in upstream and downstream stations of Three Gorges Project before and after impoundment

随着江河各类水利工程的大量新建,涉水工程对水文站网的测验及资料整编的影响日益突出,已经成为当前水文测验及资料整编工作中亟待解决的问题。通过对三峡水库蓄水前后上下游站水位-流量关系和单断沙关系进行对比分析,提出了蓄水后库区、坝区、坝下游各测站的流量、泥沙测验及资料整编优化方法。采用优化后的整编方法,可使区域各站的水文测量精度及成果准确性明显提高。

With the construction of massive water conservancy projects,whose influence on survey and data processing of hydrologic stations begin to emerge.By comparing the stage-discharge relation and the relation of single-section sediment(the relationship between single sample and cross section sediment concentrations) in the upstream and downstream stations before and after the operation of Three Gorges Project,the optimization method for discharge and sediment survey in reservoir region,dam site and downstream area and data processing is put forward.The results show that the precision of the hydrological survey and the correctness of the data are improved after adoption of the optimal method.