... gallery rock mechanics problem stress measurement principal stress Upstream Oil & Gas dam site high rock stress underground power station rock burst stress distribution SYNOPSIS The phenomenon of disk-shaped fractures of cores and of rock burst are described. This i~ followed...

... chamber powerhouse rock mass tlon power station Reservoir Characterization displacement discontinuity underground power station three-dimensional analysis joint element THREE.DIMENSIONAL ANALYSIS OF LARGE UNDERGROUND POWER STATIONS Analyse trldlmenslonelle de grandes cavernes pour des uslnes...

.... A comparison of stress, displacement and relaxed zone between actual measurement and numerical analysis of underground power station showed fairly good agreement. 2) Tunnel engineers have often encountered more or less viscous or plastic deformation during tunnel excavation and lining works. In these cases...

... Summary To build three underground power stations with vertical—axis generating and pumping sets, cavities with 60-m high walls had to be excavated. Whereas in one of the power stations no special measures were required, in the other two the rock walls were supported during excavation...