Perfect for beginners with simple, common vocabulary
Secrets Beneath Earth: Tunnel Engineering
Explore the hidden world of underground tunnel systems with this crossword featuring key terms and concepts related to subterranean construction and design.
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Across
- 1. System to circulate fresh air in tunnels
- 2. Famous video game inspired by underground excavation
- 7. Protective device used during tunnel excavation
- 10. Emergency exit route for tunnel safety
- 12. Structural reinforcement inside tunnels
- 14. Process of drilling tunnels through rock or soil
Down
- 3. Tunnel construction method using excavation then covering
- 4. Machine used to dig through earth
- 5. Device used to secure tunnel lining
- 6. Preventing water ingress in tunnel walls
- 8. Earth material that tunnels pass through
- 9. System to remove water from tunnels
- 11. Relating to earth vibrations affecting tunnel stability
- 13. Urban underground train network
- 15. Material applied inside tunnel walls for support
- 16. Passageway constructed below ground
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