Slope Stability Analysis of Hamnbanan, Gothenburg

Abstract

When constructing the new railroad link, Hamnbanan, between Eriksberg and Pölsebo more rock than anticipated fell out as wedges. Due to the excess amount of rock that had to be processed and shipped away there was an increase in cost. The purpose of this study is to see if the data available before rock blasting begun was sufficient to be able to avoid the extra volume of rock that had to be taken care of. By analysing discontinuities’ orientations and characteristics it is possible to predict the factor of safety and probability of failure for a rock slope. These analyses were performed in software’s from rocscience, and the findings show clear indications of steeper slope angles result in more volume of rock falling out.