COMPUTER AIDED DESIGN OF SEDIMENT EXCLUDER

Abstract

The problem of entry of sediment into canals taking off from alluvial streams is not new to hydraulic engineers. It has received conciderable attention in the past evolving out various controll measures viz. preventive and curative. The two most prevalent means of sediment control are the provision of a Sediment Excluder at the head works and provision of a Sediment Ejector in the canal, a little downstream of the head works. The present thesis relates to some aspects of the design of Sediment Excluders. In the present thesis a computer program has been developed and tested for designing the Sediment Excluder on the basis of • established laws of sediment transport. Program uses the concepts given by Garde and Pande (1976) for the design for uniform sediments and it makes use of recently developed methodology for design (Samaga et al. 1985) for non-uniform sediment. . This program has been tested using actual data from the field and is found to produce satisfactory results. When the results obtained from the proposed scheme for design are compared with the results of Model Tests and Prototypes, they are found to be in close agreement. Hence the proposed scheme is considered to be satisfactory for design purposes.