Improvement of efficiency of processes of mining product processing at ­transport hubs

Abstract

Methodology. Mathematical modeling methods and a systematic approach were used to formalize the object of study. Simula tion modeling techniques were used to develop the model of the research object. In order to determine the dependence of the ef ficiency criterion of transport node operation on the parameters of material flows and numerical characteristics of production re sources, regression analysis methods were applied.findings. Based on the study, it is proposed to use a specific measure of efficiency, which is the ratio of profit from customer service at the transport hub to the cost of production resources involved in the process of service. On the basis of the developed model of the transport node, it is possible to solve the aimed tasks for the improvement of logistic management and processing of products of mining enterprises at transport hubs.originality. An approach to improvement of logistic management of transport hubs at the expense of substantiation of optimal parameters of production resources and selection of the most effective version of technological process of customer service is of fered.Practical value. It consists in the development of approaches to determining the most effective version of servicing material flows, as well as to determining the optimal numerical characteristics of production resources of a transport node.

Modeling of a braking process of a mine diesel locomotive in terms of different rail track conditions

“…However, the increased motion speeds of mine trains with diesel locomotives aggravate a problem of safety preservation in a braking mode. Analysis of a diesel locomotive motion in a braking mode should involve a number of factors through which modeling of a diesel locomotive differs greatly from similar calculations for other traction transport facilities [16,17]. Currently, a problem of wheelrail adhesion [18], contacting in the presence of intervening medium, is the greatest issue in the context of mine conditions.…”