Risk management approach for the design of underground constructions

摘要

Traditional design methods for mining, tunneling and public underground constructions use deterministic approaches. Reliability requirement for these constructions became very high and deterministic approaches lead to introduction of overpriced Factors of Safety (FS). It is more appropriate to select an optimal support based on the risk focused management approach. The Monte-Carlo method for statistical simulation is recommended for the design of underground constructions. As the first step we use simplified approach based on a plausible assumption that variation in the stress and the strength of rock mass, rock pressure manifestation, and support capacity can be described by the normal distribution law.