Abstract
The paper describes an operational study of a private railway system in the Transvaal. The main objective of the study was to recommend the minimum requirements for railway lines, locomotives and wagons and an economic, safe and reliable operating method for the proposed traffic levels, controlled by a remote signalling system. A survey of locomotive and train activities was undertaken to measure actual system activity times. The railway system was successfully modelled using the Firm's simulated train haul programme and HOCUS language. The resulting proposals showed a large capital saving, in the order of 100 times the study cost, below previously estimated capital costs.
Highlights
The proposed expansion of the Mine ~ill result in four shafts feeding reef to three reduction plants
Control of the present operating system is provided by t~~-~ay radio contact bet~een the locomotive drivers and a central controller ~~o memorises the location, direction and destination ~f trains ~~th the assistance of a log sheet and light panel, ~~ich the controller illuminates manually
It has been found that the use of a typical time interval of 1 second for analysis, yields results that are ~ithin ± 7% of actual recorded train haul times
Summary
The proposed expansion of the Mine ~ill result in four shafts feeding reef to three reduction plants These shafts and plants are ~idely separated, and are connected by an extensive rsil~ay system consisting of about 35 km of single track and 35 km of sidings. Fifty daily scheduled reef train movements ~ill occur in each direction ~~en the ne~ development is completed. The study objective ~as to investigate and report on the existing rail operating system, and the future one ~~en the current extensions ~ere completed. It ~as necessary to make recommendations on the number of locomotives and ~agons required to successfully operate the system. Any sections of running lines that needed to be doubled, or siding staging capacity to be increased ~ere to be identified
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