A study on the establishment of Tunnel Contour Quality Index considering construction cost

摘要

Tunnel Contour Quality Index (TCI) has been proposed in previous studies to quantify a contour quality resulting from blasting in a tunnel or underground space, and to effectively compare the contour quality with other cases. TCI evaluates general geometric features of a tunnel contour with three parameters regarding overbreak, three weights, three correction factors and one range adjustment constant.