V.L.Polyakov On the action of micropores within bottom deposietation |
Applied hydromechanics, Vol. 6 (78) ¹ 2, (2004) |
| Solution movement and contaminant transport is considered in uniform sediment with porous space consisted of two-type pores, namely, micro- and macropores by theoretical methods. The motion domain is conditionally divided in equal cylindrical microdomains with a macropore in the center of each one. An exact analytical solution is obtained to a problem of groundwater flow within such a microdomain and a detailed analysis is conducted of macropore effect on water regime. A relationship between initial parameters is found which promotes forming a stagnant zone. An estimation is performed of changes in groundwater recharge due to separate macropores action. Hydraulics of water flow inside a macropore and its influence on external flow is studied. A general water recharge is determined in case of macropores system described by exponential function of their distribution with length. Steady diffusive-convective transport of unstable contaminants (degradation occurs according to kinetics of zero order) is investigated in presence of secondary porosity coming from groundwater. |
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| TEXT LANGUAGE: Russian |