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Using Tunnel Boring Machine Penetration Tests to Quantify Performance in Hard Rock

Using Tunnel Boring Machine Penetration Tests to Quantify Performance in Hard Rock

Abstract Tunnel boring machine (TBM) penetration tests entail incrementally increasing TBM thrust from full stop to maximum speed and recording the penetration rate either at set thrust levels or at set times. TBM penetration test data can be analysed by plotting the penetration rate (distance/revolution)…

Unsaturated Soils and Ground Movement Control in Deep Excavations and Tunnelling

Unsaturated Soils and Ground Movement Control in Deep Excavations and Tunnelling

This short course comprises two topics. Unsaturated Soils The course presents a summary of modern unsaturated soil mechanics. It introduces the fundamental concepts required for describing the behaviour of unsaturated soils followed by an account of the main features of their mechanical and hydraulic behaviour….