What
is difference between Borewell and Tubewell
(Discussion
with Harsh from Araghyam over phone)
http://www.prashantborewell.com/support.html
(www.karmayog.org)
Borewells and Tubewells are very very similar.
There are three basic difference between borewell and
tube well :
1. Casing:
In case of bore well the casing is of PVC; in case of tube well casing is of
Galvanized Iron.
2. Bore
well is usually used where there is a non collapsible hardrock; tubewell is
used where there is a collapsible soft rock or alluvial soil.
3. Though
tubewells and borewells both go deep; usually the tubewell casing goes far
deeper; whereas borewell casing does not go completely into the bore hole and
goes only until hardrock.
What is the difference between a
bore well and a tube well?
A bore well is drilled with casing pipe put only up to the soil-rock boundary
and this is done normally for shallow depths in hard rock or in crystalline
rock. But in a tube well, the casing pipes are put up to the bottom of the bore
wells, with perforation in the pipes in some level. Normally the Tube wells are
drilled in sand and gravel where the availability of water is much below the
ground level.