engleski

Calculating the working of a one-well group near the river Drava in Osijek

The watersupply of city Osijek is based on the subsurface water, which is pumped from eighteen wells. The wells are located near the river Drava. This paper will present the calculation of depression in piezometer on the flow field. The basic rules for the solution of the problem are; the group of wells is substituted with one fictitions well with equivalent hydraulic effect, located in the center of wells group. The quantity of water from substitution well is a summ of flow of wells group. The next step needed to solve the problem is: the substitution well presents a real well, and we introduce one new fictitions well from the other side of the equipotential line (the river Drava) at the equal distance. The direction of flow in the fictitions well is oposite to the real well. The depression in piezometer in flow field presents the result of superposition deppresions (positive and negative values) which from real and fictitions well. In this paper will be presented comparasion calculated values and measured values.

group of wells; river; ground water; depresion; measured and calculated values

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