非接触型電波式流速計を用いた洪水流量自動観測手法の一考察

抄録

Authors developed an automatic discharge measurement system composed with non-contact current meters for observing representative velocity distribution, an echo sounder for monitoring river bed, and water gauges for estimating the correlation coefficient. For verification purposes of the system, Acoustic Doppler Current Profiler (ADCP) on unmanned boat was employed when flooding occurred. The authors verified the non-contact current meter measures an appropriate water surface velocity compared with ADCP measurement. Assuming the ADCP measurements as the true discharge, a comparison was made between them and the results from the automatic measurement system. From the comparison, the importance of each component is clarified for completion of the system. This paper described the system including the theoretical aspects, as well as experienced flooding.