RESEARCH OF QUANTITATIVE CHARACTERISTICS OF GRAIN RAILWAY ON GRAIN TERMINAL
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Дата
2020
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Анотація
An important component of the production and export of grain is the system of transportation of grain from its producers to grain reloading terminals. Among the means of transportation of grain the leading place is occupied by the railway, which is able to provide uninterrupted multi-tonnage transportation of grain from producers to the places of its accumulation and shipment to sea vessels. However, there are some problems in the internal and external operation of grain terminals, which has necessitated these studies. The purpose of the study was to investigate the quantitative and qualitative characteristics of the flow of grain from the railway to the grain terminal to improve its efficiency. The object of the study was the technological process of receiving grain from the railway at the grain terminal; The subject of the research was grain crops, as well as data on daily revenues of grain by railway transport at the grain reloading terminal of LLC «Ukrelivatorprom» for three calendar years — from January 1, 2012 to December 31, 2014. The studies were conducted on the basis of the processing of the data of the invoice logs for each year of the research, which summed up the amount of daily transported grain (net). Further processing of the obtained was performed by the combined graphoanalytical method, for which on the basis of tables for each investigated year the corresponding histograms were constructed and the necessary indicators were determined. It was found that maize had the highest volumes of grain coming from the railways in 2012–2014, followed by wheat in 2012 and rapeseed in 2013–2014. Barley was the third, except for 2013, in which its volumes were the smallest among the main crops that came to LLC «Ukrelevatoprom» in the years studied. It is shown that the major share was occupied by cereals (67.1… 78.1%), followed by oilseeds (15.1…26.7%), and the smallest was occupied by legumes (2.77…6.8%). The duration of the annual grain intake periods, which amounted to 315, 331 and 333 days, respectively, was determined for 2012–2014. Annual, daily average and maximum grain yields were determined, as well as daily and annual irregularity coefficients of grain supply. The actual coefficients of the daily irregularity of the grain input from the railway in the period 2012-2014 were respectively Kdaily = 1.62; 1.86; 1.79, and monthly irregularities respectively K mont. = 1.31; 1,40; 1.35. According to the standards such coefficients have values Kdaily = 2.5 and Kmont. = 2.0, which allows to use them for design and verification calculations of grain terminal equipment in technological processes of grain acceptance from railway transport.