| 저자(한글) |
Barton, N.,By, T.L.,Chryssanthakis, P.,Tunbridge, L.,Kristiansen, J.,Loset, F.,Bhasin, R.K.,Westerdahl, H.,Vik, .,Myrvang, A.,Hansen, S.E.,Lv, Ming,Stjern, G.,Ruistven, H.,Kjorholt, H.,Lee, M.S. |
| 초록 |
The 62 m span Olympic lee Hockey cavern in Gjovik, Norway, is located in jointed gneiss of average RaD = 70% and has a rock cover of only 25 to 50m, thus posing challenging design p problems. The investigations prior to construction included two types of stress measurements, cross-hole seismic tomography, special coe logging, Q-system classification and numerical modelling with UDEC-BB. Predicted maximum deformations were 4 to 8 mm; surprisingly small due to the high horizontal stresses recorded. Extensometer (MPBX) installations from the surface prior to construction, precision surface levelling and MPBX installed from inside the cavern give a combined measure of maximum deformations in the range 7 to 8 mm with the 62 m span fully e excavated, and three adjacent caverns for the Postal Services also completed. |
