Improvement principles of development reclamation projects technologies considering drained lands water regulation optimization based on BIM were observed. Modern methodological basis was used, and, at the same time, a universal technical tool that allows the improvement of the practice of designing complex objects and systems that is successfully used and developed in almost all fields of science, technology, and industry is computer aided design building information modelling (BIM). In structural terms, BIM is an organizational and technical system consisting of a large number of interrelated and interacting components. The main function of BIM is to carry out object aided design and their components through the use of mathematical models and other automated design procedures and computer technology. So, transition to optimization design methods will help to improve the overall ecological and economic efficiency of drainage reclamation, especially in working out new construction, reconstruction, and modernization of irrigation and drainage systems.
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Irrigation and drainage sector formed as an independent one in Ukraine in the last 35-40 years and is positioned on the intersection of environmental management, agriculture and hydrotechnical construction (Shumakov, 1996; Aydarov et al., 1990; Romashchenko et al., 2003; Rokochinskiy, 2010; Karuk, 1992; Rex, 1995). The same problems we observed in Poland (Pierzgalski, Jeznach, 2012). The most intensive development of land reclamation in Ukraine occurred in 1966-1990, but in 1991 the state capital investment in the water management sector in general and specifically in Meliorative construction was sharply reduced. Gradually sharp decline over the years of construction and reconstruction of drainage systems and complete shutdown of their state funding occurred in 2002 (Rex, 1995).
This situation leads to inadequate supply of material and technical resources, fertilizers, lack of land improvement measures, disruptions in energy supply, reducing the amount of work on maintain and repair of reclamation equipment, permanent loss of skilled personnel, incomplete use of scientific development, insufficient information support of farms and so on. Existing meliorative systems (MS), especially drainage, do not correspond to progressive demand of agricultural production, they are also obsolete outdated and require renovation and modernization. This shooed be corresponded to the «National Program of Water Management and Environmental Rehabilitation of Dnieper river basin till 2020» and other standard legal acts which allow water melioration functioning.
In addition, today a very acute problem of climate change arises (Rokochinskiy et al., 2019). Therefore, a search for alternative ways of development of hydraulic variants of melioration, optimal types and designs of drainage systems, more efficient, reliable and environmentally friendly ways of reduction the material input, energy, fund, job and water capacity of agricultural production, also increase of food production and agricultural raw materials is an urgent position.
Reclamation development in Ukraine in, general, and particularly, in the drained area inherent all objectively common both as positive and negative trends. First of all, it concerns the fact, that the large-scale reclamation development requires significant investment, but the resulting economic effect of this is at least 60...70% from the project (Shumakov, 1996). Failure to achieve efficiency from reclamation project is due to lack of knowledge about the results of interaction of human reclamation activity with natural processes and taking them into account in the construction of reclamation facilities. Therefore, ways to improve drainage reclamation lies in the development and improvement of methods of optimization of design and calculation of drainage systems and their components on environmental and economic bases. In particular, transition to multivariance in the substantiation of design solutions is the search for the optimal design solution from selected possible alternatives. The main objective of comparative evaluation is to choose more economical and environmentally friendly investment options, that is, to ensure maximum impact from reclamation activities at the lowest cost for their realization (Shumakov, 1996).