What are criteria for selection of site for dam?
Site Selection Criteria for Dam Suitable foundation must be available. For economy, the length of the dam should be as small as possible and for given height it should store maximum amount of water. A suitable site for the spillway should be available in or nearby vicinity.
What locations are suitable for building a dam?
A dam is usually constructed across a river to create a reservoir in the valley behind by storing the water that flows into it naturally. Sometimes, they are built across dry valleys, or valleys with small streams, to create a storage area for water that is transported from elsewhere.
What are the geological considerations for the selection of dam and reservoir site?
The main geological considerations in the selection of sites for dams are: (a) The rocks which are underlying must have enough strength to withstand the weight of the dam and the resultant thrust. (b) The rocks should be impervious to prevent leakage of water beneath the sole of the dam.
Which condition is the most Favourable at the site of the dam and reservoir?
Generally a dam site is ideal where a valley is constricted with steep rock slopes. A narrow stream flowing between high, rock walls would naturally suggest a concrete overflow dam whereas a low, rolling plain would suggest an earth-fill dam.
What does dam site mean?
: a site for a dam.
How are dams selected?
The selection of Dam site for constructing a dam should be governed by the following factors. Suitable foundation must be available. For economy, the length of the dam should be as small as possible, and for a given height, it should store the maximum volume of water. This will reduce the height of the dam.
Which construction is suitable for dam?
Concrete is used to build massive gravity dams, thin arch dams, and buttress dams. The development of roller-compacted concrete allowed high-quality concrete to be placed with the type of equipment originally developed to move, distribute, and consolidate earthfill.
What is water reservoirs site some examples?
There are three main types of reservoirs; valley-dammed reservoirs, bank-side reservoirs, and service reservoirs. Valley-dammed reservoirs are created in valleys between mountains. Usually, there is an existing lake or body of water. The River Thames in London is one example of a bank-side reservoir.
Why is site investigation important in dam design and construction?
1) To access the general suitability of the site for the proposed work. 2) To foresee and provide against difficulties that may arise during construction due to ground and other local conditions. 3) To enable an adequate and economic design to be prepared.
Which of the following factor is most important in respect of selection of site of reservoir?
2.1. Quality of water is one of the most significant factors to be considered in site selection.
Where is Gangapur dam?
Nashik
Gangapur Dam is on the Godavari river near Nashik in Maharashtra, India.
What is dam math?
A decametre (International spelling as used by the International Bureau of Weights and Measures, American spelling dekameter or decameter,), symbol dam (“da” for the SI prefix deca-, “m” for the SI unit metre), is a unit of length in the International (metric) System of Units equal to ten metres. …
How many dams and reservoirs are there in India?
This page shows the state-wise list of dams and reservoirs in India. It also includes . Nearly 3200 major / medium dams and barrages had been constructed in India by the year 2012.
What makes a dam a good site for a reservoir?
1. The rock should be sound and resistant to the expected static and dynamic forces including earthquakes. 2. The valley slope should be stable when the reservoir is full. This requirement also applies to the rock abutments. 3. The foundation of the dam should be safe from sliding, especially in the case of gravity dam.
Which is the most famous Dam in Kerala?
Kerala. Some of the most famous dams and reservoirs in Kerala also includes Solaiyar Dam, Kakkayam Dam, Idamalayar Dam, Peringalkuthu Dam and Kakki Reservoir.
Which is the most expensive type of dam to build?
Gravity dams are one of the most expensive dams to be constructed. They are more durable and solid than rock-fill and earth dam. They can be constructed on site, where the natural foundation is strong enough to bear the self-weight of dam. Bhakra dam in Himachal Pradesh, India.