Optimizacija ranžirno-otpremnog dela gravitacione ranžirne stanice

Abstract

U disertaciji je prikazan iterativni postupak razvoja generalnog resenja gravitacene ranzirne stanice zasnovan na koordinaciji projekta stanice и svim fazama projektovanja sa prostornim planiranjem i zastitom životne sredine. Osnovni problem koji disertacija razmatra je optimizacija rešenja ranžirno- otpremnog dela gravitacene ranzirne stanice. Istražene su mogućnosti za poveéanje kapaciteta postojećih i novih gravitacionih ranžirnih stanica, korišćenjem poboljšanja и oblasti tehnologije rada и stanici, njenim uključivanjem и informacioni sistem, kao i korišćenjem savremenih postupaka kočenja na ranžirnoj rampi. Prikazan je postupak dinamičke specijalizacije ranžirnih koloseka, koji se mode primeniti и stanicama uključenim и informacioni sistem. Ukazano je na dve osnovne modifìkacije resenja ranzirno-otpremnog dela stanice: rešenje sa zasebnom ranžirnom i otpremnom grupom i rešenje sa objedinjenom ranžirno-otpremnom grupom, ispitane su posledice dodeljivcinja realizacije zadataka otpreme ranzirnim kolosecima. Dàt je prikaz resenja gravitacionih stanica и svetu, sa posebnim osvrtom na rešenje ranzirno-otpremnog dela stanice. Istaknute su prednosti i nedostaci obe modifìkacije resenja ranzirno-otpremnog dela, uz stav da na konačno opredeljenje najviše utiče obim i vrsta ranzirnog zadatka. U poglavlju 7 prikazana je primena Teorije masovnog opsluživanja za određivanje potrebnog broja ranžirnih i otpremnih koloseka, kao i primena postupka simulacije procesa na odgovarajuéim izlaznim grlima ranzirno-otpremnog dela gravitacione ranzirne stanice. U poglavlju 6 obrađen je poseban problem povezivanja rada gravitacione ranzirne stanice i bliske robne stanice. U poglavlju 8 data opšta matrica ciljevci i kriterijuma, koji и postupku višekriterijumske optimizacije treba da omoguée odabir funkcionalnog, bezbednog i ekonomičnog generalnog resenja gravitacione ranzirne stanice, uklopljenog и planirani prostorni razvoj, sa prihvatljivim uticajima na okolnu zivotnu sredinu. Pokazatelji navedeni и poglavlju 8 se и najvećoj meri neposredno, ili posredno određuju preko metodologie za razvoj generalnog resenja gravitacione ranžirne stanice, koja je prikazana и disertaciji.

Within the Dissertation an iterative procedure for the development of a general solution of gravitation marshalling yard has been presented. This procedure is being based on the co-ordination of a marshalling yard design during all the design phases including spatial planning and environment protection. The essential problem treated by the Dissertation is the optimisation of the solution of the marshalling-dispatching part of the gravitation marshalling yard. Possibilities for the capacity increase of the existing and new gravitation marshalling yards have been investigated using improvements within the yard’s work technology, its connection to an information system as well as using modern braking procedures at a gravitation marshalling yard. A procedure for a dynamic specialisation of marshalling tracks within a yard has been presented, which can be applied at the yards connected to an information system. Two essential modifications of the solution to the marshalling-dispatching part of a yard have been pointed out: a solution with a separate marshalling and dispatching groups and a solution with the integrated marshalling-dispatching group. Consequences of different dispatching task assignments to the marshalling tracks have been investigated as well. Various marshalling yards solutions found around the World have been presented, with a special emphasis on the solutions of the marshalling-dispatching parts. Advantages and drawbacks of both solution modifications of the marshalling­ dispatching parts have been stressed, with a conclusion that the final choice is been mostly affected by the size and the type of a marshalling task. Chapter 7 presents the application of the “Theory of mass service" for defining the required number of marshalling and dispatching tracks, as well as an application of a simulation procedure onto the appropriate exit branches of the marshalling­ dispatching part of a gravitation marshalling yard. Within the Chapter 6 a specific problem of connecting the operation of a gravitation marshalling yard with a close-by freight station has been investigated. Chapter 8 brings a general matrix of objectives and criteria, which should, within a multicriteria optimisation procedure, enable the choice of a functional, safe and economic general solution of the gravitation marshalling yard, incorporated into the pre-planned spatial development and with an acceptable impact on the environment. Parameters stated in the Chapter 8 are mostly defined, either directly or indirectly, using the methodology for the marshalling yard general solution development, which has been presented in the Dissertation