Abstract
In this paper, methodology associated with the evaluation of cost variation in underground construction projects due to geotechnical risk is presented. In detail, indicator kriging is adopted to evaluate spatial distribution of mechanical parameter, RMR (Rock Mass Rating), which associates with rock mass classification and support patterns. Consequently, results pointed out that the evaluation method proposed in this study is applicable to predict cost variation in underground construction projects due to geotechnical risk, and useful to discuss the cost-benefit of additional in-situ investigation to reduce cost overrun risk.
