雨量自动测报系统的应用与可靠性研究

Study on the Application and Reliability of Automatic Rainfall Measurement System

以黄河干流、洮河、大夏河流域为研究区,对研究区内19处雨量自动测报系统和虹吸式雨量计采集的数据进行分析研究。在对大量的原始比测数据进行分类、汇总、整理的基础上,借助SPSS20.0、水文助手、南方片水文资料整编等软件对数据进行了误差和可靠性研究。结果表明:①在0~4 mm/min降雨强度范围内,雨量测报系统采集的数据月、年统计翻斗计量误差没有超过±4%,基本满足山洪预警监测精度要求,部分人工委托雨量站存在较多的不确定性,计量误差超过±4%,不能直接进行资料整编,还需经过分析、修正才能应用;②仪器的MTBF和MTTF均为335 d,其性能基本达到《水文自动测报技术规范》的要求。

The data collected by the automatic rainfall measurement system and siphon rain gauge at 19 sites of the study area in the main Yellow River, Taohe River and Daxia River basins were analyzed and studied. On the basis of classifying, summarizing and sorting out a large number of original specific measurement data, the error and reliability of the data were studied with the help of software such as SPSS20.0, hydrologic assistant and hydrologic data integration of southern section. The results show that (a) in the range of 0-4 mm/min rainfall intensity, rainfall telemetry system of statistical data collected by month and year of skip metering error value is no more than plus or minus 4%, basically meeting the requirement of the monitoring accuracy of mountain flood warning. Some rainfall stations entrusted manually exist several uncertainties, measurement error value is more than plus or minus 4%, which cannot be directly applied to data BGF. It can be used after analyzing and correcting and;(b) the MTBF and MTTF of the instrument are 335 d, and its performance basically meets the requirements stipulated in the Technical Specification of Automatic Hydrological Measurement and Reporting.