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Which type of open well is suitable when the...

Which type of open well is suitable when the sub-soil is formed of gravel or coarse sand deposits?

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asked Sep 5, 2023 in Irrigation Engineering by Carter (75.2k points)

Which type of open well is suitable when the sub-soil is formed of gravel or coarse sand deposits?

(a) Unlined wells

(b) Wells with pervious lining

(c) Wells with impervious lining

(d) Temporary wells

This question was addressed to me in a job interview.

The doubt is from Open Well and Dug Well in division Ground Water for Irrigation through Wells and Tubewells of Irrigation Engineering

irrigation engineering
ground water for irrigation through wells and tubewells
open well and dug well

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1 Answer

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answered Sep 16, 2023 by Greg (106k points)

The correct choice is (b) Wells with pervious lining

The explanation: Permanent lining or wells with impervious lining is sunk in regions with alluvial soil formation. Unlined wells or temporary wells are of very shallow depths and can be constructed only when the water table is very near to the ground. Wells with pervious lining is generally suitable in the strata of gravel or coarse sand.

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