Hapich H. Increase of operational safety of ground hydraulic engineering constructions of water-reclamation purpose

The thesis provides theoretical generalization and new solution of scientific and practical tasks to improve operational safety of ground hydraulic engineering constructions of water-reclamation purpose. It is shown that the vast majority of accidents and outages on the ground hydraulic engineering constructions are the result of significant wear, low main-tenance status and filtering water, which do not always have outward manifestations, and therefore not diagnosed during visual observations or data fill control devices. It was experi-mentally proved and substantiated the possibility and feasibility of geophysical methods of natural pulsed electromagnetic field of the Earth (NPEMFE). The necessity and improvement of existing approaches to the determination of the safety level of groundwater hydraulic en-gineering constructions are substantiated. The calculation of the discharge capacity of spill-ways showed that most of them are not able to pass the maximum volumes of flood waters, which increases the likelihood of accident risk, filtration deformations and water overflow through the crest of hydraulic engineering constructions. Calculation of the ecological and economic efficiency of the implementation of research results and measures to improve the op-erational safety of ground-based GTS by the example of a cascade of structures of river Nyzhnya Tersa showed that the prevention of a hydrodynamic accident avoids damage in the amount of 12 million UAH or 0.68 UAH per 1 m3 of released water.