Abstract
The multifaceted solution of agricultural production issues is successfully combined with the interests of environmental protection when creating polders. As you know, a polder is a drained and cultivated low-lying section of the coast of a water body (sea, river, lake), protected from flooding by the waters of surrounding water bodies with the help of ramparts, dams and other hydraulic structures. The groundwater level in the polders is regulated by drainage devices, mainly with pumping out of water by pumping stations. Drainage with mechanical drainage minimizes the work on regulating water intakes, minimizes disturbances in the natural regime of natural water bodies, and prevents overdrying of adjacent areas. In addition, lakeside and riverside polders perform anti-flood functions. The article presents a method for determining the supply of polder pumping stations, taking into account the runoff modulus, the conditions for the removal of melt water from spring floods and other components of the water balance. The possibility of installation at the pumping station, in addition to centrifugal and axial pumps, of capsule units is shown. The paper notes that the hydraulic structures on the polders are reclamation structures that are distinguished by a specific mode of operation and design.
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