SELECTION & DESIGN OF NEW GATES AND HOISTS FOR GEZIRA CANAL - SUDAN

Abstract

Hydraulic gates are movable structures installed in dams, barrages, hydropower projects, reservoirs, canals, etc, for regulating flow. They are most important components of any water resources projects. They need specialized expertise in regards to selection, planning and design, erection and maintenance. Any deviation in satisfying the intended purposes can have disturbing 'results, and some times may cause danger to the entire project. Several types of gates are developed, out of which fixed wheel vertical lift and radial gates are used in general. Hoists are lifting devices that are required for operation of gates and they constitute in most cases indispensable component of any hydropower development. All types of gates need hoisting, if the gates are small size, say on small channels/streams, manually operated hoist can be used. In this dissertation an attempt has made select and design new gates and hoists for Gzira Canal -Sudan, because the old gates are out dated. Stresses and displacements have been analyzed using the latestFEM pack of ANSYS 13.0. A comparative study between conventional design results and FEM results have been carried out to find the effectiveness of conventional design procedure for both gates and hosts for Gezira Canal (Sudan). Two dimensional and three dimensional comparison study shows that, gate and hoist components can be designed with confidence, reliability and cost effectively with FEM as a three dimensional structure, because the three dimensional results are more accurate.