Skyline Tensile Forces in Cable Logging

Skyline tensile forces have been shown to frequently exceed the recommended safety limits during ordinary cable logging operations. Several models for skyline engineering analyses proposed. Although assume a dynamic behaviour, practical solutions are based on static approach without consideration of nature systems.The aim this study was compare field data with calculations derived by dedicated available software such as SkylineXL. To overcome limitation calculation, work also aimed simulate actual response fluctuations measured in real environment mean finite element model (FEM).Field observations included 103 cycles, recorded over four different lines standing configuration. Payload estimations, carriages positions, and time operations were collected field. The ground profiles line geometries analysed using digital elevation models. then used cycles six fully-suspended loads single-span simulated FEM built through ANSYS®. observed compared.SkylineXL resulted particularly reliable prediction forces, RMSE ranging between 7.5 13.5 KN, linked an average CV(RMSE) 7.24%. reliability predicting peak lower, reporting 10.12%, but still not likely resulting or performance problem. If properly set-up used, thus, SkylineXL could be considered appropriate operational purposes. This work, however, showed that successfully detailed analysis simulation including oscillations due motion carriage payload along line. Further developments technique lead physical log-to-ground interaction investigation breakout force lateral skidding.