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What is Tunnel Face Stability with Non-Uniform Support about?

This document discusses the stability of a tunnel face with an unsupported span and non-uniform support pressure distribution. It introduces design equations and diagrams to estimate necessary support pressure accounting for these effects, assuming a linear pressure distribution. It also discusses errors from assuming uniform support pressure and how this error is less than 10% for closed-shield tunnels but can be significant for face reinforcement.

Author

JULIE

Language

EN