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http://dx.doi.org/10.3741/JKWRA.2016.49.6.537

Intercepted flow equation at grate inlet on road  

Kim, Jung Soo (Dept. of Civil Engineering, Bucheon Univ.)
Kwak, Sang Ho (Water Supply & Waste Water Division, DOHWA)
Ryu, Taek Hee (Dept. of Civil Engineering, Kyonggi Univ.)
Yoon, Sei Eui (Dept. of Civil Engineering, Kyonggi Univ.)
Publication Information
Journal of Korea Water Resources Association / v.49, no.6, 2016 , pp. 537-549 More about this Journal
Abstract
The grate inlets generally were installed to intercept surface runoff on the roads and intercepted flow was drained to the underground sewer system. The equation of interception flow was used to determine the size and spacing of grate inlet on the roads. Therefore, it is necessary to analyze the interception capacity of grate inlet. Hydraulic experimental apparatus which can be changed with the longitudinal slopes(2, 4, 6, 8, 10%) of street, the transverse slopes(2, 4, 7, 10%), and the lengths(50, 100, 150cm) of grate inlet was installed for this study. The range of the experimental discharges were calculated with change of road lanes(2, 3, 4) and design frequencies(5, 10, 20, 30year). As the transverse slope increased, it led to the increase of interception capacity at grate inlets. The long lengths of grate inlet with direction of flow increased the interception capacity by the increase of side inflow. On the basis of the hydraulic model experiment results, the empirical equations for calculation of the interception capacity were derived with regression analysis. As a result of comparison with equations, the suggested equation of this study was estimated reasonable one for increased design frequency. Therefore, this study can suggest the basic data for design of drainage facility at road.
Keywords
Grate inlet; Interception capacity; Surface runoff; Drainage facility;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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