Reliability analysis of tunnel surrounding rock stability by Monte-Carlo method

Discussed advantages of improved Monte-Carlo method and feasibility about proposed approach applying in reliability analysis for tunnel surrounding rock stability. On the basis of deterministic parsing for tunnel surrounding rock, reliability computing method of surrounding rock stability was derived from improved Monte-Carlo method. The computing method considered random of related parameters, and therefore satisfies relativity among parameters. The proposed method can reasonably determine reliability of surrounding rock stability. Calculation results show that this method is a scientific method in discriminating and checking surrounding rock stability.