Search for dissertations about: "drill"

Showing result 1 - 5 of 64 swedish dissertations containing the word drill.

  1. 1. Noise radiation from drill steels and other experimental investigations in acoustics and fluid mechanics

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Jan-Erik Ögren; [1983]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Abstract : Drill rod noise has become a major noise source in percussive drilling. Generation of flexural waves, which seem to be responsible for most of the noise, is studied in a model with dynamic photoelasticity and in the real drill rod with strain gauge technique. READ MORE

  2. 2. Assessment of rock mass quality and its effects on charge ability using drill monitoring technique

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Rajib Ghosh; Luleå tekniska universitet.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Underground mining; Sublevel caving; Rock mass quality; Borehole filming; Borehole quality; Borehole stability; Borehole instability; Drill monitoring technique; Measurement While Drilling MWD ; Hydraulic in-the-hole ITH drilling; Drill system behaviour; Principal Component Analysis PCA ; Geo-mechanical model; Chargeability; Fracture zone; Shear zone; Cave-in; Cavity; Rock blasting; Gruv- och Berganläggningsteknik; Mining and Rock Engineering;

    Abstract : For an efficient mining operation, it is essential to have as much information as possible aboutthe ore to be excavated and the rock masses surrounding the ore. Geological information andthe content and distribution of extractable minerals, are central concerns for long term mineplanning. READ MORE

  3. 3. Dissipation in drill rod joints

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Rainer Beccu; [1989]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Abstract : .... READ MORE

  4. 4. Drill process monitoring in percussive drilling a multivariate approach to data analysis

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Håkan Schunnesson; Luleå tekniska universitet.; [1990]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Abstract : .... READ MORE

  5. 5. Rock Mass Characterisation Using Drill Performance Monitoring Problems, Analysis challenges and Limitations

    University dissertation from Luleå tekniska universitet

    Author : Rajib Ghosh; Luleå tekniska universitet.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : In open pit mining, it is important to know as much information as possible about rock masses to be mined for more cost-effective mining operation. In rock engineering perspective, information about rock mass characteristics usually includes hardness of the rock, geological features, fractures, faults, ore contacts, water bearing stratum. READ MORE