Crossword

2. Process to remove underground water, essential for stability.
8. Fractures where rocks have moved, introducing instability.
10. Systems that maintain safe air quality in confined spaces.
11. The initial phase where the tunnel takes its form, relying on specialized equipment
13. Blasted rock fragments removed after blasting, a common term in construction.
14. Force that can destabilize the rock mass, a critical groundwater factor
15. Pressures from confined groundwater, posing challenges.
16. Instruments that monitor groundwater conditions.
17. Steel structures providing support in weak rock, a common support method.

1. Flammable gas, accumulation to be avoided for safety.
2. Systems that prevent water accumulation, vital for tunnel longevity.
3. Process to fill voids and prevent water ingress, crucial for stability.
4. Techniques that can fracture surrounding rock, impacting stability.
5. Instruments that track ground movements, essential for monitoring stability.
6. Bends in rock layers caused by tectonic forces, a significant geological feature.
7. Surveys to characterize geological formations, essential for site investigation.
9. Sprayed concrete applied for immediate ground support.
12. Final lining material for a smooth surface, a fundamental construction material.