engleski

CATEGORIZING THE TUNNEL EXCAVATION IN KARST

The paper analyses the relationship between forecasted and achieved categories of excavation of certain tunnels in Croatia. A relationship is given in the natural and financial sense. Based on the analyzed relationship of forecasted and achieved categories of excavated tunnel, various approaches to this categorization are analyzed from the point of view of the designer, investor and contractor, depending on their approach to the goals of the construction as an investment project. Based on previous analyses, risk in categorization of tunnel excavations is explained as a key technological and key design risk in construction, especially for long tunnels in karst. At the end, a model for managing risk in categorization of tunnel excavations between investor and contractor is given.

long tunnel; tunnel excavation in karst; risk of categorization of tunnel excavation.

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