Sökning: "drilling hydraulic"

Visar resultat 11 - 15 av 36 uppsatser innehållade orden drilling hydraulic.

  1. 11. Non-Linear FE-Analysis of a Composite Action Girder with Coiled Spring Pins as Shear Connectors

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Simon Stahlin; [2019]
    Nyckelord :composite bridge; composite action; shear connector; coiled spring pins; finite element modeling; samverkansbro; samverkan; skjuvförbindare; spiralbult; finita element modellering;

    Sammanfattning : For bridges to cope with increased requirements such as increased loads, strengthening work can be carried out. In cases where older steel-concrete bridges do not have a composite action, an alternative is to create composite-action to achieve a higher flexural strength. It is introduced by post-installing shear connectors. LÄS MER

  3. 12. Evaluation of a Programmable Hydraulic Valve for Drill Rig Applications

    Master-uppsats, Linköpings universitet/Fluida och mekatroniska system

    Författare :Jonathan de Brun Mangs; Mikael Tillquist; [2018]
    Nyckelord :Hydraulic valve; CAN; Drill rig; Rock drill; Blast hole drilling; Time delays; Ziegler-Nichols; PI-control;

    Sammanfattning : The increase of intelligent systems can be seen in every industry. Integrated sensors and processors are used with internal control systems to create better performance for mobile hydraulic applications. The report describes how an evaluation was made to see if the productivity of a drill rig could be increased. LÄS MER

  4. 13. Pore water pressure and settlements generated from water driven DTH-drilling : - A field study

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Moa Asplind; [2017]
    Nyckelord :DTH drilling; hydraulic drilling; settlements; pore pressure; Venturi effect; Sänkhammarborrning; vattendriven borrning; sättningar; porvattentryck; Venturi effekten.;

    Sammanfattning : Foundation work can cause damage to adjacent buildings and infrastructure. Drilling is performed in sensitive areas in urban projects and where the ground conditions are difficult. It is important to be aware of the installation effects from drilling. LÄS MER

  5. 14. Fracking : is it worth the risk?

    Kandidat-uppsats, SLU/Dept. of Soil and Environment

    Författare :Jonte From; [2017]
    Nyckelord :fracking; unconventional gas development; shale gas; environmental risks;

    Sammanfattning : This review aims to summarize the current knowledge about the environmental impacts and risks about fracking and to answer the question if, on the whole, it is worth it? Peer-reviewed articles mainly from the database “Web of Science” were used. The world’s fossil fuels are rapidly running out and new sources of energy are required. LÄS MER

  7. 15. Mesh Mounting Concept for a Mechanical Rock Excavation Machine

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Elin Skoog; [2017]
    Nyckelord :mesh mounting; chain link mesh; rock reinforcement; mine tunnel support; nätmontering; stängselnät; bergförstärkning; tunnelförstärkning;

    Sammanfattning : This report is the result of a Master’s Thesis done at the Machine Design Department at the Royal Institute of Technology. The project was carried out at Svea Teknik AB in cooperation with Atlas Copco Rock Drills AB and the Mining and Rock Excavation division in Örebro. LÄS MER