Essays about: "Tunnel construction"

Showing result 21 - 25 of 50 essays containing the words Tunnel construction.

1. 21. Investigating the decrease ofgroundwater levels and the effect of fracture zone on recovery time: A case study of decrease in groundwater levels in a tunnel construction site in Vinsta, Stockholm

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Evgenia Kassiou; [2017]
   Keywords : Groundwater; spatial analysis; Modified Double Mass Statistical Analysis; 3D model; COMSOL Multiphysics; fracture zone; recovery time; soil layer;

   Abstract : Groundwater is one of the main natural resources worldwide. Groundwater exists in aquifers below the earth surface and provides quantities of water for various purposes such as supply to households and businesses, public supply, drinking water supply, irrigation and agriculture. Sweden is also highly dependent on groundwater. READ MORE

3. 22. The influence of weakness zones on the tunnel stability based on investigations in Bodøtunnelen

   University essay from Luleå tekniska universitet/Geoteknologi

   Author : Viktor Renström; [2016]
   Keywords : Rock mechanics; Numerical modeling;

   Abstract : When planning for a tunnel, the ground conditions in which the tunnel is going to be excavated through will be investigated to different extent. Lack of relevant pre-investigation data or misinterpretations of the available data can cause both economical and/or unexpected stability problems. READ MORE

4. 23. Från rum till rum : gestaltning av ett stadsstråk i Sundbyberg

   University essay from SLU/Dept. of Urban and Rural Development

   Author : Anna Gronow; [2016]
   Keywords : aktivitetspark; Centrala Sundbyberg; design; esplanad; gestaltning; torg; överdäckning;

   Abstract : Den stora bostadsbristen, tillsammans med en ökad urbanisering i Sverige har lett till att förtätning av städer blir allt vanligare. I Stockholm förtätas innerstaden på bland annat gammal industrimark, men stadsbyggnadskontoret har kommit fram till att även den glesa förorten måste förtätas. READ MORE

5. 24. Evaluation of the differences in characterization and classification of the rock mass quality : A comparison between pre-investigation, engineering geological forecast and tunnel mapping in the Northern Link project and the Cityline project

   University essay from KTH/Jord- och bergmekanik

   Author : Mehdi Benhalima; [2016]
   Keywords : Characterization; classification; rock mass quality; engineering geological forecast; tunnel mapping; discontinuities; Q-system; Northern Link;

   Abstract : In the construction of a tunnel, the characterization of the rock mass is performed in three different steps, in the pre-investigations, in the engineering geological forecast and in the tunnel mapping during construction. There has in previous work been observed that discrepancies exist between the results from these different steps, with a tendency to assign poorer rock mass quality in the tunnel mapping than in the pre-investigations and in the engineering geological forecast. READ MORE

6. 25. Numerical Modelling and Sensitivity Analysis of Tunnel Deformations in London Clay

   University essay from KTH/Jord- och bergmekanik

   Author : Malin Sandström; [2016]
   Keywords : Small-strain stiffness; Mohr-Coulomb; Plaxis; sensitivity analysis; tunnels; London Clay;

   Abstract : In dense cities, the interactions between all structures, from tall skyscrapers to complex underground tunnel systems, need to be carefully analysed as soon as a new project is considered. This is necessary because of the stress changes in the soil induced by each new construction. READ MORE