... Abstract In the current practice on rock mass classification in Singapore, the weathering grade is commonly used to determine rock mass classes with some consideration of strengths and discontinuities based on visual examination of rock cores. By application of Geological Strength Index (GSI...

... measurement result magnetic susceptibility rock mass classification sediment landslide area Upstream Oil & Gas drill core drill core observation core observation 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan Experimental Introduction of Quantitative Indexes...

..., the knocking ball tests are applied in two practices, one is to evaluate aggregate quality and the other is to determine the rock mass classification. The result of the first assignment shows that the knocking ball test is more useful and appropriate than the Schmidt impacthammer to obtain reliable elastic...

... rock mass classifications such as RMR and Q-system. The authors estimate rock mass properties of Ryukyu limestone, which are quite important for the design of engineering structures as well as assessing the stability of natural rock structures such as caves and cliffs. The unified formula proposed...

... are regarded as a tool for design of tunnel. Empirical methods have been extensively used in rock mass classification. In most of the projects, the rock mass classification is being considered as the only criteria for designing the complex underground structures. Based on the recorded information...

... tunnels, penstock pipes.Using the rock mass classifications by RMR and Q systems, the fractured rock masses along the penstock tunnels are divided into two critical sections as I and II. By considering the rock mass classifications, 3D numerical solution proposed to specify temporary and permanent support...

.... The rock support consisting of rock bolts and shotcrete was designed based on the rock mass classification and 3D numerical modeling of entire power house complex. Each stage was supported before commencing next stage. The cavern was dry. No seepage of water was encountered. However, holes were drilled...