Article Sidebar
Keywords:
Article Details
The copyright of a submitted article is only transferred to the publishers if and when the article is accepted for publication. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, mechanical, photocopying, recording or otherwise without the prior written permission of the publishers.
Main Article Content
Minimizing sediment deposition in urban drainage channels in Ghana: Channel section design approach
Abstract
The phenomenon of sediment deposition leading to the silting-up of drainage channels has been a major
problem in the performance of urban drainage systems. Preventive and costly maintenance measures are
often employed to mitigate the problem. In the area of design, critical or self-cleansing velocity methods
have been used to achieve certain levels of flushing-out of sediment load in the channels. As an
alternative to the current design practices in Ghana, this study presents the channel section approach.
Deposition of suspended sediment in channels takes place mainly because of velocity fluctuations in the
channel. In this study, therefore, a channel section capable of maintaining a constant vertical velocity
distribution is presented. The advantage of the constant velocity channel section is that it minimizes the
velocity fluctuations in the channel and subsequently reduces the deposition of sediment in the channel.
