Cannal Design

CHAPTER THREE 3. Design of Channels 3.1. General The success of the irrigation administration depends on the tar beat up of the network of transmission channels. The epithelial ducts may be excavated finished the difference types of shites such(prenominal) as alluvial speck, non-alluvial footing etc. the design experimental condition naturally veer according to the type of soil. Again, the speed of menstruate in the render should be life-sustaining. That means, the velocity should be non- congesting and non-scouring. If the velocity becomes less than the hypercritical velocity, then(prenominal) chokeing willing draw patch and the capacity of the canal will be reduced. If the velocity becomes more(prenominal) than the critical velocity then the scouring will take place and the channel will be damaged. So, determination of critical velocity is very in-chief(postnominal) in canal design. free-base on the water requirements of the crops on the area to be irr igated the faultless system of main canal, unoriginal canal, tertiary canal and plain distributaries should be designed aright for a certain possible value of peak campaign that must pass through them, so as to pull up stakes sufficient irrigation to the commands. Again, the design of seamless and lined canals involves different realistic and economical consideration. 3.2. Definition of most terms 1.

Alluvial soil: The soil which is formed by regular deposition of silt is cognize as alluvial soil. The river carries morose charge of silt in rainy season. When the river overflows its banks during the flood, the silt partic les get deposited on the contiguous areas. ! This deposition of silt continues year after(prenominal) year. This type of soil is found in deltaic region of a river. This soil is permeable and flocculent and very fertile. 2. Non-alluvial soil The soil which is formed by the rotting of rock formation is known as non-alluvial soil. It is found in the mountains regions of a river. The soil is secure an impermeable in nature. This is not fertile. 3. Silt factor (f) In designing of a canal in alluvial soil, the hang up silt and the...If you unavoidableness to get a full essay, devote it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay