Soil-Water Conservation Engineering and Structures

Teacher

Shubham Kumar Sarangi

Category

Core Courses

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Course Name : Soil-Water Conservation Engineering and Structures

Code(Credit) : CUTM1136(3-1-0)

Course Objectives

  • • To have an understanding about the degradation of productive soil and the causes of its erosion.
    • To make the students understand about the measurement techniques for soil loss and wind erosion .
    • To know the different agronomical and engineering measures adopted for its control alongwith its design.
    • To study the the design of various gully control structures and water harvesting structures

Learning Outcomes

  • After learning the topic a student will be able to know about-
    • The various types of soil,water and wind erosion along with its mitigation measures.
    • The agronomic and engineering methods of conservation and the design of bunds and terraces being implemented on the field.
    • Minimise the erosion loss by different structures and conservation of soil.

Course Syllabus


Module-I (7 hr)
• Soil erosion – Introduction.
• Causes and types of erosion.
• Agents, Factors, Effects causing erosion.
• Water erosion - Mechanics and forms of erosion.
• Stream bank erosion
• Gully Classification and Stages of gully development.
Practice (2.5 hr)
• Visit to soil erosion sites and watershed project areas for studying erosion control and water conservation measures.
• Determination of length of slope (LS) and cropping practice(CP) factors for soil loss estimation by USLE
Module-II (8.5 hr)
• Runoff harvesting – short-term and long term.
• Roof top rain water Harvesting
• Soil loss estimation – Universal soil loss equation (USLE) and modified USLE.
• Erosivity and Erodibility
• Rainfall erosivity - estimation by KE>25 and EI30 methods.
• Water erosion control measures - agronomical measures.
• Engineering measures– Contour Bunds and Graded Bunds.
• Terraces-Broad Based and Bench terrace.
Practice (5 hr)
• Computation of soil erodibility index in soil loss estimation.
• Exercises on computation of rainfall erosivity index.
• Design and layout of contour bunds.
• Design and layout of graded bunds.
• Design and layout of bench terrace.
Module-III (6.5 hr)
• Gully Control measures.
• Permanent structures for soil conservation-Drop spillway-parts and components.
• Chute spillway -parts and components
• Drop inlet spillway-parts and components
Practice (4 hr)
• Design of drop spillway.
• Design of chute spillway.
• Field visit to watershed project areas treated with soil and water conservation measures.
• Hydrologic, hydraulic and structural design of spillway.
Module-IV (8 hr)
• Hydraulic jump and its application.
• Grassed waterways and design.
• Wind erosion- Factors affecting, mechanics.
• Sediment Transportation
• Land capability classification.
• Percolation pond - site selection, design and construction details.
• Farm pond -components, site selection, capacity.
Practice (1 hr)
• Design of vegetative waterways

Session Plan

Session 1

Soil erosion – Introduction.

PDF: Introduction to soil erosion
Introduction Soil Erosion (Link)
Introduction-Soil Erosion-NPTEL
Practice-
• Visit to soil erosion sites and watershed project areas for studying erosion control and water conservation measures.

Session 8

Session 9

Soil loss estimation – Universal soil loss equation (USLE)
PDF: Soil loss estimation
Universal Soil Loss Equation (Link)
Soil loss estimation(NPTEL)
Practice-
• Determination of length of slope (LS) and cropping practice(CP) factors for soil loss estimation by USLE
• Computation of soil erodibility index in soil loss estimation.

Session 10

Session 11

Rainfall erosivity - estimation by KE>25 and EI30 methods.
PDF: EI30 and KE 25
Erosivity Index (Link)
Practice-
• Exercises on computation of rainfall erosivity index.

Session 12

Session 13

Water erosion control measures - agronomical measures-2
PDF: Agronomic measures
Conservation measure(Link)

Session 15

Session 16

Terraces-bench terrace
PDF: Bench terrace
Terraces ariel view (Link)
Terraces-NPTEL
Practice-
Design of bench terrace
Design of bench terrace link

Session 17

Session 19

Chute Spillway -Parts,description and components
PDF: Chute Spillway
Chute spillway(Link)

Practice-
Design of Chute Spillway

Session 20

Drop inlet spillway-Parts,components and funtional use
PDF: Drop inlet
Drop Inlet(Link)
Inlet of drop inlet spillway(Link)
Practice-
PDF: Drop Spillway Design

Session 22

Grasssed water way
Grassed Waterways icar note
Grassed waterways (Link)
Grassed waterway-NPTEL

Practice-
Design of vegetative waterway
Grassed waterway link

Session 23

Wind erosion- Factors affecting and mechanics
PDF: Wind erosion
Wind erosion-link
Wind Erosion-NPTEL

Session 24

Sediment Transport and Measurements
PDF: Sediment Transport and Measurements

Session 25

Session 26

Land Capability Classification
PDF: LUCC
Land capability classification-NPTEL

Session 27

Session 29

Case Studies

Case Studies

Recent Comments

    Our Main Teachers

    Completed B.Tech(Ag. Engg.) and M.Tech(Ag.Engg.),SWCE in OUAT. Qualified ICAR-NET. Now working as an Assistant Professor in Agricultural Engineering.