Using the Coefficient of Concavity in the Analysis of the Quality of Filling the Tracks of the Hump Yard

Abstract

Increasing the processing capacity and lowering the operating costs of the humps are associated with improving the track filling quality of the hump yard. The track filling quality depends on the curvature of the profile. To analyze the profile deviation, it is proposed to use the concavity coefficient, which is the ratio of the cross-sectional area of the actual profile to the normative profile values. For the study, the developed simulation model of track filling of the hump yard was used, based on calculating the movement speed of the cut and taking into account the possibility of unhooking the cut after stopping, the error of the speed control devices operation of the uncoupling cut on the way and the retarder operation, the possibility of starting the train cars when the next cut collides with them. Studies have shown that the concavity coefficient can be used as a numerical criterion in assessing the deviation of the profile from the normative values. There is a dependence between the concavity coefficient and the quality indicators of the track filling. The obtained results can be used to assess the effectiveness of the track profile alignment.