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Showing result 1 - 5 of 16 essays matching the above criteria.
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1. Adapted data collection in field utilizing RMR and the Q-system
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : The focus on slope stability has increased rapidly in Norway over the last years due to several unwanted landslides. In Norway, the most used method today to classify the rock mass and to determine the required reinforcement, is the Q-system. In addition to that the RMR method is also a commonly used method. READ MORE
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2. Environmental and technical evaluation of cement reduction and test methods for fibre reinforced shotcrete in tunnels
University essay from KTH/BetongbyggnadAbstract : The dominating support method for hard rock tunnels today is use of fibre reinforced shotcrete in combination with rock bolts. The fibre reinforced shotcrete secures smaller blocks, while rock bolts are used to support larger blocks in the rock. Application of shotcrete is done by spraying against the rock surface using compressed air. READ MORE
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3. EVALUATION OF ENVIRONMENTAL AND TECHNICAL PERFORMANCE OF ALTERNATE FIBRES FOR SHOTCRETE IN TUNNELS
University essay from KTH/BetongbyggnadAbstract : Tunnels in hard and jointed rock are normally excavated in an arch shape to enable the rock mass to support its weight. Since the beginning of the 1980's, fibre reinforced shotcrete (FRS) in combination with rock bolts have been the dominating support method for hard rock tunnels. READ MORE
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4. Design of tunnel support for single zones with swelling clay
University essay from KTH/Jord- och bergmekanikAbstract : Swelling clay is an important and challenging geological feature in tunnelling projects.The behaviour of swelling clay is influenced by many internal and external factors.This, combined with a lack of experience and knowledge has resulted in challengeswhen accounting for the swelling phenomena. READ MORE
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5. Environmental and technical evaluation of cement reduction and test methods for fibre reinforced shotcrete in tunnels
University essay from KTH/BetongbyggnadAbstract : The dominating support method for hard rock tunnels today is use of fibre reinforcedshotcrete in combination with rock bolts. The fibre reinforced shotcretesecures smaller blocks, while rock bolts are used to support larger blocks in therock. Application of shotcrete is done by spraying against the rock surface usingcompressed air. READ MORE