Essays about: "Tunnels"

Showing result 16 - 20 of 125 essays containing the word Tunnels.

  1. 16. Environmental and technical evaluation of cement reduction and test methods for fibre reinforced shotcrete in tunnels

    University essay from KTH/Betongbyggnad

    Author : Elin Brodd; Lina Östlund; [2022]
    Keywords : ;

    Abstract : 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

  3. 17. Analysis of Positional Precision when Using Ground Control Points with Supported INS in GNSS-Free Environments

    University essay from KTH/Fastigheter och byggande

    Author : Linus Bäckström; Patrik Grenert; [2021]
    Keywords : Track maintenance; GNSS; INS; GCP; GNSS-free environments; Railway positioning; Rälsunderhåll; GNSS; INS; Kända punkter; Avsaknad av GNSS; Positionering på räls;

    Abstract : Railway traffic is one of the most used transportation methods in today's society both for freight transports and transportation of people. A necessity for this to function is that the tracks upon which the trains travel are functional. READ MORE

  4. 18. The impact of noice pollution and vibrations on nearby buildings : How is the school Kulturama affected by noise and vibrations from the 'nya tunnelbana' project?

    University essay from KTH/Byggteknik och design

    Author : Hadil Jawad; Aren Nabatyan; [2021]
    Keywords : Noice pollution; vibrations; metro; nya tunnelbana project; noice absorbents; Buller; vibrationer; stomljud; luftburet ljud; nya tunnelbana projekt; absorbenter;

    Abstract : To meet the needs of the growing city of Stockholm, a large-scale project to expand the subway has been initiated. The tunneling involved in the project causes several disturbances, in terms of vibration and noise pollution, on the surroundings. This is problematic as vibration and noise pollution has been shown to have a negative health impact. READ MORE

  5. 19. Production Process for Tunnel Modeling : An Analysis of Composites for Water Applications

    University essay from Uppsala universitet/Institutionen för materialvetenskap

    Author : Melody Ghaderidosst; Vilma Hurtigh Grabe; Rebecka Norman; Adam Rosvall; Evelina Wiksten; [2021]
    Keywords : Tunnel Modeling; Water Applications; Composites; Natural Fibers; Polymers;

    Abstract : Hydroelectric power is a leading source of renewable energy where large turbines convert the kinetic energy of water into electricity. In order to not exceed the capacity limit of the turbine, excess water in the dams needs to be diverted away through spillways. READ MORE

  6. 20. Artificial Intelligence applications for railway signalling

    University essay from KTH/Transportplanering

    Author : Benjamin Smakic; [2021]
    Keywords : Artificial Intelligence; AI; Machine Learning; ML; Computer Vision; railway signalling; ERTMS level 3; GPS; autonomous train operations; Artificiell Intelligens; Maskininlärning; datorseende; signalteknik; autonoma tåg; självkörande tåg.;

    Abstract : The main purpose of this Master Thesis is to investigate how front-facing, train-mounted cameras and Computer Vision, a type of Artificial Intelligence (AI), can be used to compensate for GPS inaccuracies. By using footage from track-recording cameras, Computer Vision can be utilized to determine the number of tracks and the track occupancy of the train, which would compensate GPS inaccuracies in the lateral positioning. READ MORE