Settings out of tunnel
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Answer
Setting out a tunnel involves transferring surface alignment to the underground tunnel using surveying techniques and equipment.
Setting out of a tunnel involves transferring the center line alignment from the surface to the underground tunnel. Surveyors use specialized equipment like total stations to measure cross-sections and set out points for drilling and blasting, ensuring accuracy based on the tunnel's design parameters.
Answer for screen readers
Setting out of a tunnel involves transferring the center line alignment from the surface to the underground tunnel. Surveyors use specialized equipment like total stations to measure cross-sections and set out points for drilling and blasting, ensuring accuracy based on the tunnel's design parameters.
More Information
Setting out is crucial for the accurate construction of tunnels, ensuring that the excavation aligns with the planned design and avoids costly errors.
Tips
A common mistake is neglecting to account for the curvature of the Earth when transferring surface coordinates to the tunnel, especially over long distances. This can be avoided by using appropriate geodetic calculations and corrections.
Sources
- Setting out of Tunnel | PPT - SlideShare - slideshare.net
- Setting out and surveys for tunnels with total station - YouTube - youtube.com
- 3.4) Trimble Access Tunnels - Setting Out Positions for Drilling and ... - youtube.com
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