17.7.4. Tunnels and Subways

Try these first

1. 1.

   What is the primary purpose of ground movement detection in tunnels?

   Hint

   Think about the impacts of ground shifts.

2. 2.

   Why do we monitor gas levels in tunnels?

   Hint

   Consider what gases might be harmful.

3. 3.

   What is the primary function of ground movement detection systems?

   • Prevent floods
   • Ensure structural stability
   • Monitor air quality

   Hint

   Consider why we need stability in tunnels.

4. 4.

   Gas monitoring in tunnels is intended to:

   • True
   • False

   Hint

   Think about the safety of users in closed spaces.

5. 5.

   Create a schematic for an SHM system that incorporates ground movement, gas, and moisture monitoring in a subway environment.

   Hint

   Consider the layout of a typical subway system.

6. 6.

   Analyze a real-world incident where lack of monitoring led to structural failure in a tunnel. Discuss what monitoring solutions could have prevented it.

   Hint

   Research case studies of tunnel incidents.