Sökning: "drilling"
Visar resultat 11 - 15 av 157 avhandlingar innehållade ordet drilling.
11. Towards Discrete Element Modelling of Rock Drilling
Sammanfattning : The method of percussive rotary drilling is recognized as the most efficient method for hard rock drilling. Despite the clear advantages over conventional rotary meth-ods, there are still uncertainties associated with percussive rotary drilling. LÄS MER
12. Drill process monitoring in percussive drilling : a multivariate approach to data analysis
Sammanfattning : .... LÄS MER
13. On valve controlled fluid power systems : flow amplifier and percussive rock drilling
Sammanfattning : This thesis discusses how the design of hydraulic systems and components can be made to meet the demands of a future market in terms of efficiency, flexibility and cost. It also discusses how computer simulation can support the designer to get a higher knowledge of the system and to make the design phase more efficient. LÄS MER
14. Geophysical studies of the upper crust of the central Swedish Caledonides in relation to the COSC scientific drilling project
Sammanfattning : The Collisional Orogeny in the Scandinavian Caledonides (COSC) project aims to provide a deeper understanding of mountain belt dynamics through scientific deep drilling in the central parts of the mountain belt of western Sweden. The main targets include a subduction related allochthon, the basal orogenic detachment and the underlying partially subducted Precambrian basement. LÄS MER
15. Analysis of Excavation Damage, Rock Mass Characterisation and Rock Support Design using Drilling Monitoring
Sammanfattning : Prior to an underground excavation a site investigation is carried out. This includes reviewing and analysing existing data, field data collected through outcrop mapping, drill core logging and geophysical investigations. LÄS MER