| Popis: |
One of the factors limiting the development of cattle-breeding in conditions of semi-desert grasslands is the lack of subsaline water resources. In most cases, surface freshwater lenses, opened with relatively dug-out wells, do not give a large production rates. Therefore, the rational use of the well, aimed at obtaining the maximum possible (or required) amount of water, is important, provided that all the requirements ensuring project life and water source safety and reliable operation are met. The main factors influencing the water yield of the well, its condition and service life, are the features of the pumping equipment and operating modes, that is, the modes of pumping water from the well. The task of increasing the water-yield coefficient of a marginal water source can be solved by using water-elevating equipment with optimal parameters and regimes corresponding to the water yield of the water source. The intermittent cycle of joint operation of a water source and a water elevator, expressed in the periodic pumping of water, increases the economic efficiency of the system of mechanized water supply and although it somewhat reduces the coefficient of use of water sources, it provides the needs of objects in water. |
