Investigation on the AE characteristics and progressive failure behaviors of tunnels by strength reduction method DOI Creative Commons
Xianhui Feng,

Yadav Kedar Prasad,

Bin Gong

et al.

Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13

Published: May 16, 2025

The fracture features and failure mechanisms of tunnels excavated in shallow deep rock masses are investigated using a series three-dimensional heterogeneous models that incorporate cross section, tunnel alignment, faults support system. strength reduction method is embedded the process analysis to achieve gradual process, macro mode safety factor, reproduce characteristic phenomenon surrounding masses. mechanical acoustic emission energy rocks at different stages whole formation zonal disintegration further discussed. results indicate triggered by stress redistribution; section influences buildup, shadow transfer as well mass; dip system can affect pattern near surface along their strikes; twin-tunnel layout makes more intricate. These insights advance our understanding engineering.

Language: Английский

Investigation on the AE characteristics and progressive failure behaviors of tunnels by strength reduction method DOI Creative Commons
Xianhui Feng,

Yadav Kedar Prasad,

Bin Gong

et al.

Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13

Published: May 16, 2025

The fracture features and failure mechanisms of tunnels excavated in shallow deep rock masses are investigated using a series three-dimensional heterogeneous models that incorporate cross section, tunnel alignment, faults support system. strength reduction method is embedded the process analysis to achieve gradual process, macro mode safety factor, reproduce characteristic phenomenon surrounding masses. mechanical acoustic emission energy rocks at different stages whole formation zonal disintegration further discussed. results indicate triggered by stress redistribution; section influences buildup, shadow transfer as well mass; dip system can affect pattern near surface along their strikes; twin-tunnel layout makes more intricate. These insights advance our understanding engineering.

Language: Английский

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