published papers
Some published papers are presented on various topics in rock engineering, design and construction. From time to time additional papers or summary of papers will be presented. The papers (in pdf-format) cover the following items:
Unlined pressure tunnels and shafts:
- Rebuilding of the 70 years old Nore 1 power plant
- Norwegian design and construction experiences of unlined pressure tunnels and shafts
Subsea tunnels:
- The Fröya tunnel
- Going sub-sea on the brink of the continental shelf
- New milestones in subsea blasting at water depth of 55m
- Stability and water leakage in hard rock subsea tunnels
- Application of Norwegian subsea tunnel experience to construction of Xiamen Xiang'an subsea tunnel
Rock mass characterization, classification and rock engineering:
- The deformation modulus - comparison between in situ tests and indirect estimates
- Classification as a tool in rock engineering
- Use and misuse of rock mass classification systems with particular reference to the Q system
Block size measurements and characterization:
- The volumetric joint count - a useful measure of the degree of rock mass jointing
- The weighted joint density method leads to improved characterization of jointing
- Application of seismic refraction survey in assessment of jointing
- Measurements of and correlations between block size and rock quality designation (RQD)
Swelling clays, weakness zones/faults:
- Tunnel collapses in swelling clay zones, part 1
- Tunnel collapses in swelling clay zones, part 2
- The significance of weakness zones in rock tunnelling
Various:
- Creative use of the underground in Oslo, the capital city of Norway
