Top 7 Types of River Training Works
- Embankments: The floods may be prevented from submerging the country by constructing earth embankments.
- Guide Banks or Bell’s Bunds:
- Spurs or Groynes:
- Impermeable Groynes:
- Permeable Groynes:
- Bed Pitching and Bank Revetment:
- Dredging of River:
What is the purpose of river training works?
OBJECTIVES OF RIVER TRAINING WORKS The various objectives of river training are (i) To guide the axis of flow at ordinary and low stages and safe passage of floods without overtopping the banks, (ii) To protect the banks from erosion and generally improve their alignment by stabilizing the river channel, (iii) To train …
How many categories the river training works are classified?
three categories
Into how many categories the river training works are classified? Explanation: Based on the purpose of the river training works are undertaken, these works are classified into three categories. They are training for discharge, training for depth, and training for sediment.
Why is river training adopted on rivers?
1) The fundamental objective is to restrict the horizontal movement of the river channel along a certain alignment. 2) The river training work is adopted to train the river because the river in alluvial flood plains is prone to meandering and hence cause a lot of damage to life and property.
Is code for river training works?
These Indian codes/guidelines are treated almost like bible and the designers have hardly any freedom to deviate from the provisions made in the codes. IRC-89(1997), IS: 6966, part-1 (1989), IS-8408(1994), IS-10751(1994), IS-14262(1995) related to design of river training works have similar deficiencies.
Which of the following is probably the most widely used for the river training works?
spurs
Works that are done to ensure the river flows through barrage and not to submerge the adjacent lands are called as ‘river training works’. The most widely used for the river training works is spurs.
What is important and necessity of river training?
River training, in its wider aspects, covers all those engineering works which are constructed on a river, so as to guide and confine the flow to the river channel, and to control and regulate the river bed configuration, thus ensuring safe and effective disposal of floods and sediment loads.
What is the difference between a weir and a barrage?
A weir is an impermeable barrier that is built across a river to raise the water level on the upstream side. On the other hand, a barrage involves adjustable gates installed over a dam to maintain the water surface at different levels and at different times.
What is meant by control and training of rivers?
‘River training’ refers to the structural measures which are taken. to improve a river and its banks. River training is an important component in the prevention and. mitigation of flash floods and general flood control, as well as in. other activities such as ensuring safe passage of a flood under a.
What is groynes or Spurs?
Also called groynes, spur, dikes, or transverse dikes. They constitute probably the most widely used training work. Spurs are the structures constructed on the river bank normal to the dominant flow direction or at an angle pointing upstream or downstream.
What is substructure of bridge?
The substructure of the bridge consists of the portion of the bridge that supports the entire structure on the given surrounding soil. Substructure: The substructure consists of the portion of the bridge that supports the entire structure on the given surrounding soil.
What is cut off in river training works?
Cut-offs as river training works are to be carefully planned and executed in meandering rivers. The cut-off is artificially induced with a pilot channel to divert the river from a curved flow which may be endangering valuable land or property or to straighten its approach to a work or for any other purpose.
What are the characteristics of river training?
1. River training works The river flowing in alluvial plains meander in wide widths. River discharges also vary widely. In certain years, the flood season discharges may be as high as 500 times the discharge of low flow season. Therefore, rivers carry different sediment loads at different times of the year according to variation in discharge .
What is meant by high water training?
In short, high water training is training for discharge. The purpose of river training works is to provide sufficient depth of water for inland navigation, during low water seasons i.e. during summers for non-perennial rivers mainly in South India.
What are the river training measures used in Barrage/bridge?
Typical layout of River Training Measures used in barrage/bridge Kosi Mahasetu at Nirmali, Bihar Road cum Rail Bridge –U/S and D/s Guide bunds, extended guide bunds or afflux bunds 2 km 8 km Alignment, layout are best decided based on model studies.
What are the different types of river protection structures?
•Longitudinal protection structures. installed on river banks parallel to the river course: Levees or earth fill embankments, Concrete embankments, Revetments and rock riprap, sheet piles, etc • Other Protection Structures. Sandbagging, Channel lining, Bamboo piles River Training Structures
