Dekhtyar M. Information models and method of energy efficiency management of road repair works

The dissertation work is devoted to the actual scientific and technical problem of information modeling of the choice of optimal organizational and technical parameters during road repairs according to the criterion of energy saving. The solution of the set tasks is offered to be carried out by means of information technologies - the software complex realized by means of VBA in MS Excel2019. The analysis of indicators that appeared during the processing of input information was performed using the methods of mathematical statistics, probability theory and queuing system. An analysis of the urgency of the problem of energy saving in Ukraine as a whole and in the road transport sector. It is determined that the energy intensity of the country's gross domestic product is almost 2 times higher than in Europe. And this is at a time when Ukraine is an energy-deficient country and meets the needs for fuel and energy resources through their own production by less than 20%. An important factor necessary for the development of the economy, the efficient operation of all branches of production is the use of transport arteries. In the first place for the carriage of passengers and transportation of goods is road transport. The cost of transportation is 1.5 times, and fuel consumption is 30 percent higher than in developed foreign countries. The cost of transportation is significantly affected by the quality of roads, which is unsatisfactory: 51.1% do not meet the requirements for equality, 39.2% - for strength. Fuel costs, depending on the equality of coverage are about 16-18%. That is why in 2020 the project "Large construction" was launched, the priority of which was the restoration of the road network and in 5 years it is planned to repair about 24 thousand kilometers of roads.Maximum attention will be paid to current repairs, and in second place - overhaul of roads. That is why it is important to implement measures and technologies aimed at improving energy efficiency during road repairs. After all, the cost and ton of conventional fuel obtained through energy savings is several times less than the cost of its extraction or purchase. Information models for determining fuel consumption in the repair area by road vehicles performing repair work, traffic flow moving past the repair area and vehicles delivering materials to the repair area are built. To model the processes occurring in the repair area on the basis of energy efficiency, it is advisable to use mathematical modeling implemented in the software. Information and mathematical models have been developed, which are used to calculate changes in fuel consumption by rollers, asphalt paver, transport flows and dump trucks - suppliers of asphalt concrete mixture, road capacity in the repair area depending on the length of the variable grip. Algorithms and programs for determining the number of dump trucks required for uninterrupted supply of asphaltconcrete mixture to a mechanized crew depending on weather conditions and productivity of the leading machine - asphalt paver have been developed. A method for determining the optimal length of the variable gripper in terms of saving fuel consumption by road vehicles, dump trucks and traffic flowing through the repair area. Evaluation of energy efficiency was obtained by determining the energy consumption in the repair area. This method allows you to take into account the time, linear characteristics, as well as technical parameters of road machines and the result of its use is to increase the energy efficiency of road repairs.