CWE3263 Hydraulic Structures I

Introduction

Hydraulic structures are anything that can be used to control water flow velocities, directions and depths, the elevation and slope of the stream bed, and general configuration of waterway including its stability and maintenance characteristics. A weir, for example, is a type of hydraulic structure which can be used to pool water for irrigation, establish control of the bed (grade control) or, as a new innovative technique, to divert flow away from eroding banks or into diversion channels for flood control. The shape, size and other features of a hydraulic structure can vary widely for different projects, depending upon their functions. Hydraulic design procedures must govern the final design of all structures. This module will introduce the students to understand the basic principles of river engineering, and design of diversion works and cross-drainage and drop structures.

The following is a brief indicative of the module of hydraulic structures I:

Topic 1: River engineering

• Some basic principles of open channel flow,
• River morphology and regime,
• River surveys,
• River flood routing,
• River improvement.

Topic 2: Diversion works

• Weirs and barrages
• Intakes
• Fish passes

Topic 3: Cross-drainage and drop structures

• Aqueducts and canal inlets and outlets
• Culverts, bridges and dips
• Drop structures.