Sökning: "Rock fractures"
Visar resultat 1 - 5 av 88 avhandlingar innehållade orden Rock fractures.
1. Multiphase Contamination in Rock Fractures : Fluid Displacement and Interphase Mass Transfer
Sammanfattning : Multiphase flow and transport in fractured rock is of importance to many practical and engineering applications. In the field of groundwater hydrology an issue of significant environmental concern is the release of dense non-aqueous phase liquids (DNAPLs) which can cause long-term groundwater contamination in fractured aquifers. LÄS MER
2. A random field model for aperture and roughness of rock fractures
Sammanfattning : .... LÄS MER
3. Novel methods for 3-D semi-automatic mapping of fracture geometry at exposed rock faces
Sammanfattning : To analyse the influence of fractures on hydraulic andmechanical behaviour of fractured rock masses, it is essentialto characterise fracture geometry at exposed rock faces. Thisthesis describes three semi-automatic methods for measuring andquantifying geometrical parameters of fractures, and aims tooffer a novel approach to the traditional mapping methods. LÄS MER
4. 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
5. Tunnel Grouting: Engineering Methods for Characterization of Fracture Systems in Hard Rock and Implications for Tunnel Inflow
Sammanfattning : In tunnel construction in hard rock, a common method to reduce water inflow is to perform pre-grouting. The grouting design should be adapted to the current rock mass conditions as well as the stated inflow requirement for the tunnel project. LÄS MER