径流流量及含沙量自动动态测量系统(英文)

Automatic System for Dynamical Determination of Sediment Concentration and Flow Rate in Runoff

利用 γ射线在泥沙中的衰减规律和水位测量方法 ,设计了径流泥沙含量和径流流量全自动测量系统。该系统包括自动采样、自动测量、数据分析输出及查询、操作控制系统等 4个子系统。实现了实时、快速、动态地测量坡面径流流量与泥沙含量以及测量数据自动存取和远距离传输。大量试验测试表明该系统测量历时短、数据传输快捷、测量结果准确。系统不仅适合于室内土壤侵蚀试验中泥沙含量与流量的测量 。

Gamma ray attenuation and water level measuring methods were used to design an integrated automated system to determine the dynamic state of sediment concentration and flow rate in runoff. The system makes possible the real time, high frequency, precision and simultaneous measurements of sediment concentration and flow rate, as well as the storage, retrieve and long distance transmission of measured data. The system consists of four subsystems: the automated sampling, automated measuring and acquisition, data analysis/output/retrieve and operation/control. Laboratory application experiments and tests of the integrated system indicate that the system has such unique capabilities as short time for high precision measurements, and fast transmission of logged data. The system is so designed that it can be used not only for measuring sediment concentration and flow rate in the laboratory experiments of soil erosion study, but also for field research and for on site long term monitoring of soil and water loss from runoff plots.