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What is Heavy Tunnel Support Tutorial in RocSupport about?

This tutorial demonstrates modeling a tunnel requiring heavy support due to serious stability problems. It uses the Carranza-Torres solution method to determine ground reaction curves. The model is a 10m diameter tunnel at 75m depth in rock with a Hoek-Brown strength of σci = 4MPa, mi = 12, and GSI = 17. Without support, convergence is a high 13.2%. I-section steel sets spaced at 1.5m and installed 3m from the face are added, reducing convergence to an acceptable level.

Author

tarun kumar

Language

EN