Measurement of the flood discharge of a small-sized river using an existing digital video recording system

被引：81

作者：

Tsubaki, Ryota ^{[1
]}

Fujita, Ichiro ^{[2
]}

Tsutsumi, Shiho ^{[3
]}

机构：

[1] Hiroshima Univ, Dept Civil & Environm Engn, Hiroshima 7398527, Japan

[2] Kobe Univ, Dept Civil Engn, Nada Ku, Kobe, Hyogo 6578501, Japan

[3] Zenrin Co Ltd, Kitakyushu, Fukuoka 8038630, Japan

来源：

JOURNAL OF HYDRO-ENVIRONMENT RESEARCH | 2011年 / 5卷 / 04期

关键词：

LSPIV; STIV; Small-sized river; CCTV; River discharge measurement; Float method; Floating debris; PARTICLE IMAGE VELOCIMETRY; DEBRIS;

D O I：

10.1016/j.jher.2010.12.004

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, a closed-circuit television (CCTV) system, installed for surveillance purposes, is utilized to measure the flow rate during a flood. The procedure to determine both the angle and scale-factor of the camera is described. Then, image analysis techniques, namely the direct visual measurement method, Large-Scale PIV (LSPIV) and Space-Time Image Velocimetry (STIV), are applied to the video images recorded by the CCTV camera. The results of these methods and the conventional float measurement are compared. In addition, the accuracy of the respective methods is discussed. A set of low-quality video images of a flood during a thunderstorm that occurred under the dark ambient conditions (midnight) is analyzed using three image-based methods. The transition of the flow rate during the event is successfully estimated. (C) 2011 International Association of Hydro-environment Engineering and Research, Asia Pacific Division. Published by Elsevier B.V. All rights reserved.

引用

页码：313 / 321

页数：9

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