L Ribeiro e Sousa; et al's Innovative numerical modelling in geomechanics PDF
By L Ribeiro e Sousa; et al
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Extra resources for Innovative numerical modelling in geomechanics
The process consists in the activities: i) ranking the risk factors; ii) system to be modeled; iii) conceptual models of the system; iv) numerical analysis to study potential impacts of risk factors; and v) risk management plan to manage risk factors. The first activity is related to the rank the risk factors according to their impact in the matrix of risks, and should include project cost, construction sequence, safety, operations and the environment. The second activity regards the system to be modeled combining the constructing facilities and the existing rock mass where the underground structures will be performed.
Laxiwa hydroelectric scheme. a) 3D model for numerical analysis; b) calculation model for excavation of the cavern group (Feng & Hudson, 2011). Figure 18. Laxiwa hydroelectric scheme. Faults distributions at a powerhouse section (Feng & Hudson, 2011). Figure 20. Laxiwa hydroelectric scheme. Distribution of stresses and strains (Feng & Hudson, 2011). indb 20 3/31/2012 3:28:45 PM by B. Dasgupta, Hoek, 2000) is illustrated in Figure 23. Other models with circular shape, the designated particle DE models, initially intended for the study of the mechanical behavior of granular media (Cundall & Strack, 1979), can be used following the Synthetic Rock Mass concept (Pierce & Fairhurst, 2011).
Due to the rock mass characteristics the most important parameters in the behavior of the Figure 46. , 2002). , 2009). The geomechanical data obtained in this formation was well adjusted to the normal and lognormal distributions. Both distributions were considered to evaluate the impact of prior assumptions on the final results. The mean values of E, calculated and measured by the LFJ tests, are very similar. The main difference is the higher variation in the calculated values. This fact can be considered normal since the LFJ tests are much more accurate than the empirically based expressions.
Innovative numerical modelling in geomechanics by L Ribeiro e Sousa; et al