The document discusses different types of dams. It defines a dam as a structure built across a stream, river, or estuary to store water, creating a reservoir for uses like water supply, irrigation, or power generation. It describes the main components of dams like spillways. It classifies dams based on size, use, and structure. The main structures discussed are embankment, arch, gravity, and timber dams. Important dams mentioned include Kaptai Dam in Bangladesh, Hoover Dam in the US, Aswan Dam in Egypt, Nurek Dam in Tajikistan, Glen Canyon Dam in the US, and Three Gorges Dam in China.
Reservoir Planning: Introduction; Investigations for reservoir planning; Selection of site for a reservoir; Zones of storage in a reservoir; Storage capacity and yield; Mass inflow curve and demand curve; Calculation of reservoir capacity for a specified yield from the mass inflow curve; Determination of safe yield from a reservoir of a given capacity; Sediment flow in streams; Life of reservoir; Reservoir sediment control; flood routing. Various types of Spillways and design.
Any hydraulic structure which supplies water to the off taking canal known as headwork. Storage head work is that stores water when it is available and supplies when needed.
DAMS
Types of dams
Selection of dam sites
Geological characters for investigation
Selection of the dam type
Gravity dams
butress dams
embankment dams
arch dams
cupola dams
composite dams
Bhakra Dam
Mir Alam multi-arch dam
Idukki Dam
Tehri Dam
Ujani Dam or bhima dam
Reservoir Planning: Introduction; Investigations for reservoir planning; Selection of site for a reservoir; Zones of storage in a reservoir; Storage capacity and yield; Mass inflow curve and demand curve; Calculation of reservoir capacity for a specified yield from the mass inflow curve; Determination of safe yield from a reservoir of a given capacity; Sediment flow in streams; Life of reservoir; Reservoir sediment control; flood routing. Various types of Spillways and design.
Any hydraulic structure which supplies water to the off taking canal known as headwork. Storage head work is that stores water when it is available and supplies when needed.
DAMS
Types of dams
Selection of dam sites
Geological characters for investigation
Selection of the dam type
Gravity dams
butress dams
embankment dams
arch dams
cupola dams
composite dams
Bhakra Dam
Mir Alam multi-arch dam
Idukki Dam
Tehri Dam
Ujani Dam or bhima dam
How To Select a DAM System: Best Practices, Pitfalls To Avoid, and a Look at the Market in 2013
In the market for a Digital & Media Asset Management system? Thinking about divorcing your current vendor? Looking for a better way to manage your brand assets, and wondering if there's an online dating site that will allow you to use the perfect algorithm, matching your needs to the best possible solution? This session is for you.
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Ailments of the First Concrete Dam in Sri LankaNihal Vitharana
Nalanda dam is the oldest concrete gravity dam on the Island built in the 1950s by the Ceylon Department
of Irrigation. The dam was built in 9 monoliths having a dam crest length of approximately 125m and a
maximum height of about 36m. The spillway consists of: (1) a low-level uncontrolled ogee-crested horseshoe
section with a crest length of 46m, and (b) a high-level broad crested weir with a crest length of 43m.
It was designed and constructed according to the then standard practices adopted throughout the world.
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required by modern standards. Under a program of dam safety improvement of the dams throughout Sri
Lanka, it was decided to stabilise Nalanda dam as the first step in addressing a series of issues affecting the
dam.
This paper presents the construction history, current issues, design assumptions and salient construction
features in the upgrading of the dam to modern dam safety requirements.
A dam is a hydraulic structure of fairly impervious material built across a river to create a reservoir on its upstream side for impounding water for various purposes. A detailed ppt on dams,its types,pros and cons.
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The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
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2. Prepared by
Muneer Ahmed
Department of Water Resources Engineering
3. Dam is a structure built across a STREAM,
RIVER, or estuary to store water. A
RESERVOIR is created upstream of the dam
to supply water for human consumption,
IRRIGATION, or industrial use.
4. Dam is the central structure in a multipurpose scheme
aiming at the conservation of water resources.
Auxiliary works for a dam include spillways, gates, or
valves to control the discharge of surplus water, an
intake structure and means for permitting boats or
fishes to cross the dam.
5. A spillway is a section of a dam designed
to pass water from the upstream side of
a dam to the downstream side.
Types of spillway include:
primary spillway,
auxiliary spillway,
emergency spillway,
fuse plug spillway etc.
13. Significant considerations when building a dam
include:
permeability of the surrounding rock or soil
•earthquake faults
•landslides and slope stability
•water table
•peak flood flow
•reservoir silting
•environmental impacts on river fisheries, forests
•impacts on human habitations
•compensation for land being flooded as well as
population resettlement
•removal of toxic materials and buildings from the
proposed reservoir area
22. By use dams can be classified as:
1.check dam
2.detention dam
3.diversionary dam
4.dry dam
5.saddle dam
6.storage dam
7.overflow dam
8.wing dam
9.cofferdam
24. Detention dams are constructed to minimize the
impact of flooding and to restrict the flow rate of a
particular channel.
25. A diversionary dam diverts all or a portion of
the flow of a river from its natural course.
26. A dry dam is designed to control flooding. It normally holds
back no water and allows the channel to flow freely, except
during periods of intense flow .
27. Saddle dam under construction
A saddle dam is an auxiliary dam constructed to
confine the reservoir created by a primary dam.
28. Storage dams are built to provide a reliable source of water
for short or long periods of time.
31. A weir is a type of small overflow dam that are often
used within a river channel .
32. A wing dam extends partway into a river and forces water into
a fast-moving center channel which reduces the rate of
sediment accumulation.
33. A cofferdam is a (usually temporary) barrier constructed
to exclude water from an area that is normally submerged.
34. By structure dams can be
classified as:
1. embankment dam
2. timber dam
3. arch dam
4. gravity dam
5. steel dam
6. beaver dam
35. Embankment dams are made from compacted earth,
they rely on their weight to hold back the force of water.
36. The San Luis Dam,California is an embankment dam
37. A Timber crib dam, Michigan
Timber dams were widely used early due to ease and speed of
construction. Rarely built in modern times by humans because
of relatively short lifespan and limited height.
49. Location- on the Karnafuli river at Kaptai in Rangamati
district, 65 km upstream of Chittagong.
Length- 670.56m
Height- 45.7m high
Width- 45.7m (at foundation level)
7.6m(at crest level)
The catchment area of the reservoir- 11,000 sq km
Since it is an earthen dam a 16-gated spillway (each 12.2m
by 11.3m) with discharge capacity of 625,000 cusec has been
constructed on the left side of the main dam.
53. Compared to concrete barrage and regulators rubber dams are cheaper and more flexible
and can be fully deflated during the flood season . Rubber dams can be as long as 100m
and used for irrigation , small-scale hydropower generation and rural water supply.
55. Feature Bakkhali Dam Eidgaon Dam
Length (m) 84 52
Height (m) 3.5 3
Maximum water retention depth (m) 4 3
Maximum overflow discharge (cumec) 256 80
Maximum flood flow (cumec) 1073 600
Length of concrete floor (m) 40 33.5
Protective works (m):
Upstream 9 6
Downstream 13 8
Volume of inflated dam (cu m) 1200 800
Weight of dam bag (ton) 14 7
Filling pump capacity (cu m/hr) 150 100
Filling/emptying time (hr) 8.1 8.1
Total cost (million Tk) 36 18
57. About hoover dam…
Official name- Hoover Dam
Impounds- Colorado River
Locale- Nevada-Arizona United States
Length- 1244 ft (379 m)
Height- 726.4 ft (221 m)
Construction began- 1931
Opening date- 1936
Construction cost- $49 million