In this article we will discuss about:- 1. Well Flow near Aquifer Boundaries—Image Wells 2. Method of Images 3. Method of Images for Particular Cases. Well Flow near Aquifer Boundaries—Image Wells: When a well is located close to a barrier (impermeable) or recharge boundary, marked deviations from a radial flow system occur. Solutions in such cases are readily obtainable by [...]
The ultimate drawdown in a well measured at the designed rate Q of continuous pumping for a given period is different from the theoretical drawdown due to well losses. The total drawdown sw is made up of: (i) Head loss resulting from laminar flow in the formation (formation loss), (ii) Head loss resulting from the turbulent flow in the zone [...]
If a relatively thin impervious formation of a stiff clay layer is encountered at a shallow depth underlain by an extensive thick confined alluvial aquifer, then it is an excellent location for a cavity well. A hole is drilled using the hand boring set, and casing pipe is lowered to rest firmly on the stiff clay layer, Fig. 5.54. A [...]