Essays about: "tunnel lining"
Found 4 essays containing the words tunnel lining.
-
1. Laboratory testing of shotcrete with fibres of steel, basalt or synthetic materials
University essay from KTH/BetongbyggnadAbstract : Shotcrete or sprayed concrete has become an inevitable material for stabilising and supporting hard rock tunnels. To prevent rock block fallouts in the excavated tunnel, shotcrete is pneumatically projected under high pressure on the rock surface. READ MORE
-
2. Structural Health of a concrete tunnel lining under complex in situ loading
University essay from KTH/Bro- och stålbyggnadAbstract : Supporting structures were designed for a utility tunnel in hard rock which was to be intersectedby some road tunnels. With the intersections involving partial overlapping between the idealcross-sections, a concrete lining and post-tensioned steel cables were added to support theutility tunnel prior to the excavation of the road tunnels. READ MORE
-
3. An experimental study of the validity of the round panel test method for shotcrete
University essay from KTH/BetongbyggnadAbstract : Shotcrete (sprayed concrete) was used for the first time in 1914 and has become of growing importance in stabilizing the excavated tunnel sections over the past century. Even though the technology develops, there are some difficult tasks such as the design of a bolt anchored tunnel lining made of shotcrete. READ MORE
-
4. A parametric study of irregularly shaped shotcrete shells
University essay from KTH/BetongbyggnadAbstract : The shape of a tunnel wall after the task of blasting and drilling is typically irregular. After the tunnel wall is sprayed with shotcrete, the resulting shotcrete surface will also be irregular and have a big variation in thickness due to uneven shotcrete coverage. READ MORE
