Author(s): Hui Ling Wong; Hubert Chanson

Linked Author(s): Hui Ling Wong

Keywords: Culvert; Box Culvert; Rectangular Culvert; Turbulence; Open Channel Flows; Fish Passage; Environmental Fluid Mechanics; Hydrodynamics; Field Investigation; Fieldwork; Sediment deposits

Abstract: Culverts are hydraulic structures designed to carry large flow of freshwater through an embankment. Despite its importance, studies to date were mostly carried out in simplistic laboratory settings or through numerical modelling. The existing literature covers little to no publications relating to field investigations of the flow field and detailed velocity measurements in standard culverts. Detailed field measurements of the hydrodynamics characteristics in a prototype culvert are crucial for applications such as fish passage. Herein, a field investigation was carried out to study the hydrodynamics of the low-velocity zones in a box culvert barrel for fish passage applications. Field preparations discussed in this paper include site surveys, instrumental mounting and setup, ADV configuration test, and sediment sampling. Some preliminary field data are discussed and detailed in this paper. Sieve analyses were performed on the sediments collected from each cell of the culvert to understand the granulometry of the soil. The results of the analyses are detailed in this paper, providing implicit, yet interesting knowledge of the hydrodynamics characteristics in each of the culvert cells.

DOI: https://doi.org/10.64697/978-90-835589-7-4_41WC-P1615-cd

Year: 2025