Summary:

In the article were presented, research methods and analysis of obtained research results the humidity distributions in ground under subsurface sewage di-sposal field from the physical model and the numerical model. To the research of the humidity of ground, in the laboratory was con-structed a physical model of the subsurface sewage disposal field which was an object of area investigates. [Kalenik 2002]. This model consisted of two independent frame systems: stand of the ground tank and the bed, after which the cart moved with installed appliances to measurements of the humidity of ground. Dimensions lump of ground being in a tank of ground are the following: length – 113 cm, height – 56 cm, breadth – 5 cm. To measurement humidity apply microwave appliance, acting in support about principle simultaneous measurement change amplitude and phase wave electromagnetic, which go through examine points of the profile ground. The applied method to research, she is fast, accurate and repeated, because she doesn't require structure was destroyed of investigated ground. To construction of the numerical model was used a software worked out through Z. Srokę and B. Wosiewicza including three modules: preprocessor (GENMESH), computational module (FINENA) and postprocesor (IZOGRAF) [Wosiewicz and Sroka 1992]. He is enabling analysis two-dimensional (in a verti-cal section) established in the time of the flow of water in ground. He is taking into consideration the filtration in the aeration zone and saturation. Research the humidity distributions of ground were made for hydraulic lo-ad intensity subsurface sewage disposal field q = 0.028 md-1. After comparing of the line humidity distributions of ground were stated, that numerical model in suf-ficient step is reflecting physicals conditions distributions of sewage from subsur-face sewage disposal field into ground. The introduced numerical model can suc-cessfully to apply to the simulation the humidity distributions of ground under subsurface sewage disposal field and to calculate the maximum level of the mirror of the groundwater during the work of subsurface sewage disposal field. Using the numerical model during designing subsurface sewage disposal field, will enable accurate recognizing the distributions the humidity of ground, which will set up in his range and to which the height will raise ground water level under subsurface sewage disposal field. It will permit testing whether won't stay made smaller the required distance (1.5 m) from the level distributions of se-wers to highest ground water level of during his exploitation.