Säkerhet är ständigt en primär fråga vid byggnation, detta innefattar även drivning av tunnlar. För att förhindra ras eller utglidning av block undersöks och klassificeras därför berget. Tunneln som undersöks i denna studie kostar ungefär 7000 kr/timme att driva. Därför finns det mycket pengar att spara på effektivisering av arbetsmoment, däribland kartering. I denna uppsats jämförs därför tre olika karteringsmetoder såsom konventionell kartering, fotogrammetri och laserskanning. De olika metodernas Q- och RMR-index jämförs sedan med hänsyn till de olika ingående parametrarna i klassificeringssystemen.    Syftet med studien är att studera om de nya karteringsmetoderna har några ekonomiska och/eller säkerhetsmässiga fördelar, samt även eventuella fördelar vad gäller lagring av bergets kvalitet och egenskaper i digitalt format. Därutöver även att studera om de nya teknikerna kan ersätta den konventionella karteringsmetoden helt eller till viss del.     Laserskanning och fotogrammetri kan inte helt ersätta dagens konventionella kartering. Detta på grund av att alla parametrar för klassificeringssystemen inte kan observeras/tolkas i de framställda digitala modellerna, utan måste göras på plats. Dock kan de digitala metoderna kombineras med den konventionella och därmed är en fullständig kartering och klassificering möjlig. Däremot finns andra fördelar med de digitala metoderna såsom digitala lagringsmöjligheter, detaljrika lättolkade modeller och att de är tidseffektiva över längre sträckor. / Safety is always a primary concern during construction, even during tunnel construction. To prevent rock fall or sliding of blocks the rock has to be examined and classified. The tunnel examined in this report costs about 7000 SEK/hour to construct. Therefore, a lot of money can be saved by streamlining the work process, including mapping of geological structures. In this paper three mapping methods are compared, such as traditional geological mapping, photogrammetry and laser scanning. The Q and RMR index from the three different methods are then compared with respect to the various parameters included in the classification systems.    The purpose of this study is to find out whether the new mapping methods have any financial and/or safety benefits, as well as any potential benefits in terms of storage in digital format of information about the rock quality and features, or not. The purpose is also to examine if the new technologies could replace the traditional mapping method fully or partially.     Laser scanning and photogrammetry cannot completely replace today’s conventional mapping. This is because some of the parameters are not possible to be observed and interpreted in the produced digital models, but must be done in situ. However, there are other benefits of the digital methods such as digital storage capabilities, detailed, easily interpretable models and that it takes less time to map large areas or long distances.

The Garpenberg mine, owned by the Boliden Mining group, has established a trial area at Dammsjön orebody in order to examine the possibility of increasing the productivity of the mine. The mine uses the rill mining method with a current rill height of 15 m. In order to increase the productivity, the mine is examining the possibility of increasing the height of the rill. The trial area is located at 882 m depth surrounded by dolomite on the hangingwall and quartzitic rock on the footwall side. Rock support arches have been installed, in addition to the regular support pattern, to test their effectiveness on stabilizing the ground around the drifts. The arches have been installed in every 6 m and every 3 m in different parts of the test area. Rock samples from the trial area were brought to the university laboratory for testing. The data gathered from the laboratory tests along with the data from the monitoring of the trial area were used to develop a calibrated numerical model. A three-dimensional (3-D) model was therefore created, by using the FLAC3D numerical code. After the calibration of the model a parametric study was conducted for different rill heights and different arch spacing to investigate the performance of the arches. Specifically, the case of no arch installation along with the cases of an installed arch every 6 m and 3 m were tested, for the rill heights of 15 m, 20 m, 25 m and 30 m. The study concluded that the arches assisted in reducing the ground convergence in the production drift. The results also showed that the total height of the rill bench yields regardless of its height. After the yielding, the rockmass can no longer support itself and caves under its own weight. The larger the rill height, the larger the volume of loose rock that has to be supported and thus, higher the convergence. Furthermore, it was also observed that, significant amount of convergence in the production drift occurred during the drifting of the top drive and less during the stoping of the rill bench. This indicates that, the timely installation of the arches is an important criterion for their performance.