![Buildings | Free Full-Text | Influence of Underground Excavation Expansion on Surrounding Rock Characteristics at Intersection of Ventilation Shaft and Tunnel: A Case Study Buildings | Free Full-Text | Influence of Underground Excavation Expansion on Surrounding Rock Characteristics at Intersection of Ventilation Shaft and Tunnel: A Case Study](https://www.mdpi.com/buildings/buildings-13-00388/article_deploy/html/images/buildings-13-00388-g002.png)
Buildings | Free Full-Text | Influence of Underground Excavation Expansion on Surrounding Rock Characteristics at Intersection of Ventilation Shaft and Tunnel: A Case Study
![The incredible work to repair one of UK's deepest railway ventilation shafts at Cowburn tunnel | ITV News Granada The incredible work to repair one of UK's deepest railway ventilation shafts at Cowburn tunnel | ITV News Granada](https://images.ctfassets.net/pjshm78m9jt4/6tOM3HdbgEisaSseT1y4cX/fda703ae760e5c73dd5fdcc6a90fd6cd/tunnel3.jpg?fm=jpg&fit=fill&w=650&h=366&q=80)
The incredible work to repair one of UK's deepest railway ventilation shafts at Cowburn tunnel | ITV News Granada
![8.15m Tunnel Boring Machine 'Annie' passing through ventilation shaft during 7.5km excavation on the Channel Tunnel Rail Link Stock Photo - Alamy 8.15m Tunnel Boring Machine 'Annie' passing through ventilation shaft during 7.5km excavation on the Channel Tunnel Rail Link Stock Photo - Alamy](https://c8.alamy.com/comp/B8J3HW/815m-tunnel-boring-machine-annie-passing-through-ventilation-shaft-B8J3HW.jpg)
8.15m Tunnel Boring Machine 'Annie' passing through ventilation shaft during 7.5km excavation on the Channel Tunnel Rail Link Stock Photo - Alamy
![Ventilation Shaft For The Wallasey Kingsway Tunnel, Wallasey, Wirral, Merseyside Stock Photo, Picture And Royalty Free Image. Image 105600571. Ventilation Shaft For The Wallasey Kingsway Tunnel, Wallasey, Wirral, Merseyside Stock Photo, Picture And Royalty Free Image. Image 105600571.](https://previews.123rf.com/images/graemelamb/graemelamb1805/graemelamb180500004/105600571-ventilation-shaft-for-the-wallasey-kingsway-tunnel-wallasey-wirral-merseyside.jpg)