甘肃省泾河流域流量监测站网布局优化设计

Optimization Design of Flow Monitoring Station Network Layout in Jinghe River Basin of Gansu Province

鉴于河流流量监测站网是收集流域内径流相关水文信息的重要网格系统,立足于甘肃省泾河流域流量监测站网现状,采用径流递变率法和线性内插精度法确定大河控制站数目的上下限,采用欧氏贴近度法确定区域代表性站点,进而提出站网布局的优化方案。布局优化后的甘肃省泾河流域流量监测站总数由21站增加至27站,包括增设大河控制站1站、区域代表站5站,迁移区域代表站1站;站网密度由原来的1 476 km^(2)/站优化至1 148 km^(2)/站。研究成果实现了对甘肃省泾河流域水资源在时间和空间分布变化上的控制,提高了站网的社会效益和经济效益。

The river flow monitoring station network is an important grid system for collecting hydrological information related to the runoff in the watershed.This article is based on the current situation of the flow monitoring station network in the Jinghe River Basin of Gansu Province.The upper and lower limits of the number of large river control stations are determined using the runoff rate method and linear interpolation accuracy method.The regional representative stations are determined using the Euclidean closeness method.Then,an optimization plan for the station network layout is proposed.The total number of flow monitoring stations in the Jinghe River Basin of Gansu Province has increased from 21 to 27 after layout optimization,including the addition of 1 river control station,5 regional representative stations,and the relocation of 1 regional representative station.The station network density has increased from 1476 km^(2)/station to 1148 km^(2)/station.The research results have achieved control over the temporal and spatial distribution changes of water resources in the Jinghe River Basin of Gansu Province,improving the social and economic benefits of the station network.