Essays about: "shallow tunnels"

Found 5 essays containing the words shallow tunnels.

  1. 1. Arching Stability in Shallow Tunnels : A comparison between analytical and numerous solutions

    University essay from KTH/Jord- och bergmekanik

    Author : Adam Tvinghagen; [2016]
    Keywords : UDEC; numerical modelling; arching stability; beam theory;

    Abstract : .... READ MORE

  3. 2. Characterization of an REE-enriched black substance in fractured bedrock in the Ytterby Mine

    University essay from Stockholms universitet/Institutionen för geologiska vetenskaper

    Author : Susanne Sjöberg; [2014]
    Keywords : ;

    Abstract : A black substance seeping from fractured bedrock was observed in tunnels leading to the mainshaft of the Ytterby mine on Resarö, Sweden. These are dry tunnels at shallow depth, +5 mabove sea level and 29 m below ground surface, resulting from the reconstruction of the mineinto a fuel deposit for the Swedish Armed Forces during the Cold War era. READ MORE

  4. 3. Limitations of the Ground Reaction Curve Concept for Shallow Tunnels Under Anisotropic In-situ Stress Conditions

    University essay from KTH/Jord- och bergmekanik

    Author : Diego Lope Álvarez; [2012]
    Keywords : Ground reaction curve; shallow tunnels; isotropic stress conditions; anisotropic stress conditions; analytical solution;

    Abstract : The deep mining industry and civil engineering need to perform rock stability analyses during excavation projects. These analyses are closely related with displacements in tunnel contours. The ground reaction curve is a powerful tool to characterize these displacements that is widely used in the New Austrian Tunneling Method. READ MORE

  5. 4. Stability Analysis of Shallow Tunnel of Norra Länken

    University essay from KTH/Jord- och bergmekanik

    Author : Rana Muhammad Sajid Imran Khan; Kabindra Man Shrestha; [2011]
    Keywords : FEM Calculation; Shallow Tunnel; PLAXIS; Norra Länken;

    Abstract : Shallow Tunneling through highly populated areas of big cities is a challenging task. Almost in all the tunneling projects of shallow tunnel some or the other types of tunneling problems have been encountered and are still being faced. READ MORE

  6. 5. Litostratigrafiska studier av en platåformad sand- och grusavlagring i Skuremåla, Blekinge

    University essay from Lunds universitet/Geologiska institutionen

    Author : Fredrik Stenfeldt; [2006]
    Keywords : Skuremåla; litostratigrafi; deglaciation; randfält; strandförskjutning; Baltiska Issjön; Blekinge; lithostratigraphy; subaqueous fan; shoreline displacement; Baltic Ice Lake; Earth and Environmental Sciences;

    Abstract : I Skuremåla, Blekinge har litostratigrafiska studier utförts av en platåformad grus- och sandavlagring. Skuremåla-avlagringen har tidigare beskrivits som ett delta med en överyta på 55 m ö h. Syftet med arbetet är att tolka vad för sorts ”delta” Skuremåla-avlagringen utgör samt depositionsmiljön för sedimenten i fråga. READ MORE