Modelling input of fine granular sediment into drainage systems via gully-pots

被引:39
作者
Deletic, A
Ashley, R
Rest, D
机构
[1] Univ Aberdeen, Dept Engn, Aberdeen, Scotland
[2] Univ Abertay Dundee, Urban Water Technol Ctr, Dundee DD1 1HG, Scotland
[3] ENTACT Inc, Wood Dale, IL 60191 USA
关键词
urban storm drainage; sediment build-up; sediment wash-off; gully; field data; model application;
D O I
10.1016/S0043-1354(00)00133-0
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
An existing model of sediment wash-off from paved surfaces has been extended to predict fine granular sediment inputs into drainage systems via roadside gully-pots. The model comprises three separate components: (1) a model of sediment accumulation on paved surfaces; (2) a model of sediment wash-off from these surfaces; and (3) a model of sediment deposition and erosion in gully-pots. The first two model components have been previously successfully tested, whereas the third component of the model is presented in this paper for the first time. The model was applied to two small catchments located in Dundee, Scotland, where data on flow rates and sediment concentrations were collected at the inlets into the main drainage systems from the road gullies. It was found necessary to calibrate only the build-up component of the model to achieve good agreement between the simulated and measured data. It was concluded that only two calibration parameters are required to model the input of fine granular sediment into storm drainage systems via gully-pots. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:3836 / 3844
页数:9
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