Jun 21, 2020, 09:50 by dieterdre...@gmail.com: > > > sent from a phone > > >> On 21. Jun 2020, at 02:26, Joseph Eisenberg <joseph.eisenb...@gmail.com> >> wrote: >> >> > In case of a well, as the aquifer is below your starting point, I’d think >> >you would need some kind of pump and not just gravity (at the beginning)? >> >> Look at the diagram: >> >> https://en.wikipedia.org/wiki/Qanat#/media/File:Qanat-3.svg>> or >> >> https://en.wikipedia.org/wiki/Qanat#/media/File:Qanat_cross_section.svg >> >> The first part of qanat, on the uphill side, is alway slightly higher than >> the point where it exits the hill. The water flows downhill by gravity. >> > > > > right, then where is the well? Isn’t this always about getting the water from > the aquifer? And if it is a well as stated as a possibility in the wiki, how > can it work with just gravity? A well means a hole dug into the ground to get > access to water below the point where you are, not? > See https://upload.wikimedia.org/wikipedia/commons/thumb/4/44/Qanat_cross_section.svg/1920px-Qanat_cross_section.svg.png and https://en.wikipedia.org/wiki/Qanat#Technical_features "the origin of the qanat was a well that was turned into an artificial spring" On the diagram it is labelled as as "mother well" on the left > A well means a hole dug into the ground to get access to water below the > point where you are, not? > and quanat is an underground channel starting from water level of a well, see linked diagram
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