JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre Requisites

Water Resources Engineering

Course Objectives

To study various types of reservoirs and diversion headwork. The

subject also covers the topics such as gravity dams and earth dams.

Course Outcomes

At the end of the course, the student will be able to:

• Plan an Irrigation System
• Design irrigation canals and canal network
• Plan and design diversion head works
• Design irrigation canal structures
• Analyze gravity and earth dams
• Design spillways and energy dissipations works
• Analyze and design gravity dams

UNIT - I

Storage Works-Reservoirs - Types of reservoirs, selection of site for reservoir, zones of storage of a reservoir, reservoir yield, estimation of capacity of reservoir using mass curve- Reservoir Sedimentation – Life of Reservoir.. Types of dams, factors affecting selection of type of dam, factors governing selection of site for a dam.

UNIT - II

Gravity dams: Forces acting on a gravity dam, causes of failure of a gravity dam, elementary profile, and practical profile of a gravity dam, limiting height of a low gravity dam, Factors of Safety - Stability Analysis, Foundation for a Gravity Dam, drainage and inspection galleries.

UNIT - III

Earth dams: types of Earth dams, causes of failure of earth dam, criteria for safe design of earth dam, seepage through earth dam-graphical method, measures for control of seepage. Spillways: types of spillways, Design principles of Ogee spillways - Spillway gates. Energy Dissipaters and Stilling Basins Significance of Jump Height Curve and Tail Water Rating Curve - USBR and Indian types of Stilling Basins.

UNIT - IV

Diversion Head works: Types of Diversion head works- weirs and barrages, layout of diversion head work - components. Causes and failure of Weirs and Barrages on permeable foundations,-Silt Ejectors and Silt Excluders Weirs on Permeable Foundations – Creep Theories - Bligh’s, Lane’s and Khosla’s theories, Determination of uplift pressure- Various Correction Factors – Design principles of weirs on permeable foundations using Creep theories - exit gradient, U/s and D/s Sheet Piles - Launching Apron.

R16 B.TECH CIVIL ENGG.

UNIT - V

Canal Falls - types of falls and their location, Design principles of Notch Fall and Sarada type Fall. Canal regulation works, principles of design of distributor and head regulators, Canal Cross Regulators -canal outlets, types of canal modules, proportionality, sensitivity and flexibility. Cross Drainage works: types, selection of site, Hydropower- classification, and principal components of hydroelectric power plants.

TEXT BOOKS:

• 1. Irrigation and water resources engineering by G.L. Asawa, New Age International Publishers.
• 2. Irrigation engineering by K. R. Arora Standard Publishers.
• 3. Irrigation and water power engineering by Punmia & Lal, Laxmi publications Pvt. Ltd., New Delhi

REFERENCES:

• 1. Theory and Design of Hydraulic structures by Varshney, Gupta & Gupta
• 2. Irrigation Engineering by R.K. Sharma and T.K. Sharma, S. Chand Publishers 2015.
• 3. Irrigation Theory and Practice by A. M. Micheal Vikas Publishing House 2015. R16 B.TECH CIVIL ENGG.