Sökning: "gruv"
Visar resultat 6 - 10 av 141 avhandlingar innehållade ordet gruv.
6. Freezing Temperature Flows in Railway Tunnels and its Consequence on the Rock Supporting Structure, the Rock and the Reinforcing Elements
Sammanfattning : Water in the surrounding rock mass flows into the tunnel via naturally occurring joints and via cracks caused by the blasting used to excavate the tunnel. The most common method in Sweden to reduce or prevent leakage problems are first and foremost the use of grouting. LÄS MER
7. In-situ and laboratory stress investigations using borehole data from the North Atlantic Ocean
Sammanfattning : This doctoral thesis presents results from investigations ofin-situ and laboratory stress from borehole logging andlaboratory deformation experiments on drill-cores. The datacome from hydrocarbon exploration and production wells in theDanish Sector of the North Sea, and from boreholes drilled bythe Ocean Drilling Program (ODP). LÄS MER
8. In situ stress from borehole breakouts in Denmark
Sammanfattning : .... LÄS MER
9. Caving mechanisms for a non-daylighting orebody
Sammanfattning : The sublevel caving mining method is a mass production method with potentially very low operational costs. The success of this method is dependent on, among other factors, the cavability of the orebody and the overlying rock mass. LÄS MER
10. Optimisation of fragmentation and comminution at Boliden Mineral, Aitik Operation
Sammanfattning : Syftet med denna avhandling är att optimera fragmenteringen i Bolidens Minerals dagbrott Aitikgruvan. Sprängning är en av huvudprocesserna i gruvbrytning och dess resultat har stor inverkan på gruvans totala ekonomi. LÄS MER