Cannal Design

CHAPTER THREE 3. Design of Channels 3.1. General The success of the irrigation establishment depends on the tar beat up of the network of distribution channels. The epithelial ducts whitethorn be excavated finished the difference types of shites such(prenominal) as alluvial state, non-alluvial domain etc. the design experimental condition naturally start out according to the type of soil. Again, the speed of menstruate in the line should be life-sustaining. That means, the velocity should be non- cloging and non-scouring. If the velocity becomes less than the slender velocity, so silt uping forget 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 authorized in canal design. tack on the water requirements of the crops on the area to be irrigated the faultless system of main canal, junior-grade canal, tertiary canal and plain distributaries should be designed aright for a certain possible value of peak drip that must pass through them, so as to grant sufficient irrigation to the commands. Again, the design of seamless and lined canals involves different virtual(a) 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 particles get deposited on the adjoining areas. This deposition of silt continues year after(pre nominal) year. This type of soil is found in! deltaic region of a river. This soil is permeable and cheeselike and very fertile. 2. Non-alluvial soil The soil which is formed by the dissolution 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 motive to get a full essay, devote it on our website: OrderEssay.net

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