... geomechanics machine learning Upstream Oil & Gas correlation prediction tbm performance prediction tunnel structural geology RMR performance prediction penetration rate maroshi-ruparel water supply tunnel strength TBM performance database estimation Engineering FPI classification system...

... Abstract Due to the large experience accumulated in the use of the RMR b (Rock Mass Rating), as well as to the simplicity of the estimation of the GSI (Geological Strength Index) and to the importance of GSI as input data in the Hoek & Brown failure criteria, both the RMR b and GSI...

... tunneling project around the world, the attempt is made to estimate utilization via Rock Mass Rating (RMR) System herein. It is concluded that the machine utilization has some reasonable correlations with RMR; however, this relationship is depend on not only rock mass properties but also machine...

.... The n value decreased in water-saturated condition and increased under confining pressure in proportion to strength. The effect of time was incorporated into Rock Mass Rating (RMR) with the aid of the n value. A formula representing the reduction of RMR due to time was proposed. 1 Introduction...

... engineering parameters, namely RMR, Q and GSI values. The same types of equations were gained as those published by previous researchers but with different constants. The geotechnical background of the area including the underground cavern system is very complex. At the beginning we were using the RMR and Q...

... geomechanical classification modification database machine learning Upstream Oil & Gas Artificial Intelligence classification correlation classification result structural geology clastic rock mass geological situation underground excavation RMR exploration work Bieniawski rock mass...

... Pereira Galera structural geology mitri deformation modulus Artificial Intelligence relation RMR Serafim estimation equation Bakhtiari Dam Site rock mass limestone determination Nicholson Bieniawski marly limestone 171 Rock Engineering in Difficult Ground Conditions Soft Rocks...

... RMR excavation method construction 605 Rock Engineering in Difficult Ground Conditions Soft Rocks and Karst Vrkljan (ed) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-80481-3 Predicted and actual conditions of the Namroud project diversion tunnel D. Bahadorbeygi Culham Construction Co...

... metals & mining stability analysis rock fall analysis investigation classification RMR stability Rock mass Rating category mechanical property Bieniawski rock mass classification rock mass Artificial Intelligence strength factor discontinuity safety factor multistage...

... metals & mining Upstream Oil & Gas rock mass classification system Reservoir Characterization Artificial Intelligence RMR machine learning natural language Daesung compressive strength equation classification system excavation safe unsupported span orientation stability...

... Resources. Daejeon, Korea ABSTRACT: The acquaintance relations between rock mass classification methods, RMR and Q, and their paral1leters are analyzed. The correlation coefficients between parameters and the matrix of acquaintance relations are derived. The acquaintance relation matrix can prescribe...

... to consider the water effect: to evaluate RMR as if the rock mass were fully dry and to introduce water pore pressure in computations (see Bieniawski 2000). But that doesn't take account of the reduction of strength and deformability of the rock when saturated. Figure 1 (Pells, 1993) shows a Deere-Miller...

... engineering geological (IGM) and geotechnical models (GM), it is indispensable to conduct engineering rock-mass classification using one of the widely recognized methods. Starting from the existing RMR and Q classifications, we have developed a new "n" classification which enables a more complete limestone...