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Mathematical model groundwater level lawering in aquifer located between two lawpermeable layers due to vertical drainage system is presented. In order to determine the distributions of water heads calculations were performed for three modes of subsoil confi guration.
Mathematical model groundwater level lawering in aquifer located between two lawpermeable layers due to vertical drainage system is presented. In order to determine the distributions of water heads calculations were performed for three modes of subsoil configuration.
Nonlinear differential equations (hyperbolic type) was applied to describe the optimalization approach of basin irrigation system. The proper boundary conditions were assumed. The water flow in dry penncable subsoil was determined. The calculation results for embankment canals agree well with observations.
Flow in trapezoidal crack of anizotropic porous media is analysed. Flow modelling is based on Dupuite law assuming two-dimensional situation. A new equations for calculation of water discharge in open crack are proposed.
Analytical model of groundwater level rice due to irrigation was presented. The proposed formulas allow to determine the depth of groundwater level for given time intervals.
Analytical model of groundwater level lowering after the end of irrigation was described. According to the model proposed the rate of water lowering can be determined. The model was applied for analysis of groundwater flow in subsoil consisted of two layers: permeable and impermeable.
Analytical solution for estimation of function in irrigation system in presented. Infiltration process was described using integral equation and depending on the infiltration function different solutions were obtained.
Analytical model of top soil salenization with taken into account evaporation is proposed. Mathematical solution of this problem allow to determine an sald concentration in soil water.
In this paper an analytical model of groundwater flow to vertical drainage is described. As a results of calculations the formulae for estimation of water discharge was proposed.
Infliltration process is usually described using unsteady model of water flow in unsaturated porous media. The paper presents mathematical analysis of infiltration process during irrigation of surface soils. The analysis alow to estimate the optimal condition for border irrigation system.
Analitical model of grundwater discharge in two layer medium has been considered. Formulas for drain discharge, pressure in the two layers and lowering of groundwater level have been found.
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