aboyt dam safety design

1. Civil Engineering Department

2. DAM SAFTEY DESIGN
By- PREETI BALA RASHMI
PREETI BALA
RASHMI

3. CONTENTS
 Introduction
 About dam
 Structure of dam
 Types of dam
 Dam failures
 Causes of dam failures
 Dam safety program implementation
 Dam safety program development
 Roles and responsibilities
 Dam safety guidelines

4. Introduction
• Dam safety systems are systems monitoring the
state of dams used for hydropower or other
purposes.
• This includes the use of differential GPS and SAR
remote sensing to monitor the risks imposed
by landslides.
• For large dams seismographs are used.

5. Dams:-
Dam is a solid barrier constructed at a
suitable location across a river valley to store
flowing water.
Uses of stored water:-
• Hydropower
• Irrigation
• Water for domestic consumption
• Drought and flood control

6. Structure of Dam:

7. • These dams are heavy
and massive wall-like
structures of concrete in
which the whole weight acts
vertically downwards.
TYPES OF DAMS:-
Gravity Dams:

8.  Bhakra Dam is the highest Concrete Gravity dam in Asia
and Second Highest in the world.
 Bhakra Dam is across river Sutlej in Himachal Pradesh.
 The construction of this project was started in the year 1948
and was completed in 1963 .

10. Buttress Dam:
• Buttress Dam – Is a
gravity dam
reinforced by
structural supports.
• Buttress - a support
that transmits a force
from a roof or wall to
another supporting
structure.

11. Arch Dams:
• These type of dams are concrete or masonry dams which are
curved or convex upstream in plan.
• This shape helps to transmit the major part of the water load to the
abutments.

13. Earth Dams:
• They are trapezoidal in shape.
• Earth dams are constructed where the foundation or the
underlying material or rocks are weak to support the masonry
dam.
• Earthen dams are relatively smaller in height and broad at the
base.
• They are mainly built with clay, sand and gravel, hence they are
also known as Earth fill dam or Rock fill dam.

15. Dam failure:-
It is a uncontrolled release of impounded
water resulting in downstream flooding
which can affect life and property.

16. Main causes of Dam Failure
Concrete Dam Failure:-
 Lack of shear strength
and discontinuity in
foundation.
 Excessive or differential
deformation of the
foundation.
 Piping and erosion in
the foundation caused
by high permeability.

17. Embankment Dam Failure:-
 Liquefaction
 Large settlement in the foundation

18. Dam Safety Program Implementation
 Guidelines provide templates and flow sheets
for dam safety programs.
 All management actions must be derived in
proper way.
 Assign responsibility & authority for
management actions.

19. Dam Safety Program Development
 A good Dam Safety Program requires collaboration of a
number of groups.
 Operators, designers and regulators must all provide input
to the dam safety program .
 Program must consider the “tailings management system”
– not just the dam

20. Roles and Responsibilities
 Roles and responsibilities must be clearly defined
 Everyone must understand that the
owner/operator is ultimately responsible for
the safe operation of the facility
 The Mine Manager must accept this responsibility
and mandate that the dam safety program will be
followed without exception.

21. Dam Safety Guidelines
 Intended to offer a comprehensive review:
 Dam -design -operation -construction
–maintenance -surveillance
 Recommendations rather than binding regulations
 Guidelines are not standards
 Details dealt with as necessary