prevent flood

1. APPLICATION OF
RETAINING WALL WITH
RELIEF SHELF IN FLOOD
CONTROL 0F
KUTTANAD
BY
GAYATHRY T J

2. INTRODUCTION
 Retaining wall: structure designed to sustain the lateral
pressure of earth behind it.
 The lateral force acting between the retaining structure and the
retained earth mass is termed as lateral earth pressure .
 Used in various fields of engineering such as roads, harbours,
dams, subways, railroads, tunnels, mines, and military
fortification .
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3. INTRODUCTION
• Cantilever retaining wall is constructed up to a height of 6 m
and above that it becomes uneconomical.
• To support more height of earth mass advancement is done in
cantilever retaining wall by adding relief shelf in it.
• Thereby, decreasing the acting lateral earth pressure and
increasing the overall stability of the retaining wall.
• It results in a reduction in the overturning moment and
consequent economy in the design .
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4. Fig 1: Cantilever Retaining wall with
relief shelf
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5. SIGNIFICANCE OF STUDY
• Kuttanad is a small region in the Alappuzha district. Kuttanad
containing an area of about 1100sq.km in Kerala and the ground
surface is below the sea level.
• Kuttanad has experienced the worst floods in the last two decades.
Water level had risen to about 5 feet in the most places, areas in
Kuttanad are in the flood prone zone and flooded at least once a year.
• Therefore the aim of the proposed research is to analyse the effect of
incorporating retaining wall with relief shelf in the control of floods in
Kuttanad.
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6. SOFTWARE USED
• The Professional Version which is used in this research, PLAXIS-2D Version 8, is a finite
element package which is capable of handling soil-structure interaction phenomenon with
much accuracy/efficiently.
• It is intended for the two-dimensional analysis of deformation and stability in geotechnical
engineering. Geotechnical applications require advanced constitutive models for the
simulation of the non-linear, time dependent and anisotropic behaviour of soils and/or
rock.
• In addition, since soil is a multi-phase material, special procedures are required to deal
with hydrostatic and non-hydrostatic pore pressures in the soil.Although the modelling of
the soil itself is an important issue, many tunnel projects involve the modelling of
structures and the interaction between the structures and the soil. PLAXIS-2D is equipped
with features to deal with various aspects of complex geotechnical structures.
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7. REFERENCE
1. Vinay Bhushan Chauhan; and S. M. Dasak (2019): ‘Performance of a
Rigid Retaining Wall with Relief Shelves’, © ASCE, 32(3).
2. Hitesh Rathi, Dr. G. N. Ronghe(2019): ’Optimize Positioning of Relief
Shelf in Cantilever Retaining Wall’, Global Research and Development
Journal for Engineering .
3. Chauhan, V. B., and Dasaka, S. M. (2016): “Behaviour of rigid retaining
wall with relief shelves with cohesive backfill.” Proc., 5th Int. Conf. on
Forensic Geotechnical Engineering, International Society for Soil Mechanics
and Geotechnical Engineering, London, 350–357.
4. Hany F. Shehata(2016): “Retaining walls with relief shelves”. Springer
International Publishing Switzerland, 1:4.
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8. REFERENCE
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4. A. C. Chougule, Prof. J. P. Patankar , P. A. Chougule (2017): ’
Effective Use of Shelves in Cantilever Retaining Walls’ International
Research Journal of Engineering and Technology (IRJET), Volume: 04 Issue:
07 .
5. Prof. Dr. D.N.Shinde, Mr.Rohan R. Watve(2015): “ Optimum Static
Analysis of Retaining Wall with & without shelf /Shelve at different level
using finite Element analysis”, International Journal of Engineering Research
and General Science ,Volume 3, Issue 2, Part 2.
6. Gowda, K and Karthik, B. (2016): “Analysis of Counterfort Retaining Wall
with and without Pressure Relief Shelf using Soft Computing Technique”,
Science Insights: An International Journal, 6(1): 7-10.

9. REFERENCE
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7. S. Sooryalekshmi (2019): “An Assessment of Flood in Kuttanadu : A
Study on Infrastructural Damages to Household and Coping Mechanism of the
Local Self Government institutions”, A Journal Of Composition Theory
Volume XII Issue XI.
8. Obi Lawrence E. “Application of Retaining Wall in the Control of Flooding
and Gully
Erosion.” American Journal of Engineering Research (AJER), vol. 6, no. 9,
2017, pp. 203–206.

10. THANK YOU