Engineering Surveys have wide experience in underground construction and in the use of various technologies including:

    • Leica Tunnel Measuring System (TMS) using both fully automatic Total Stations and Laser Scanners for tunnel profiling.
    • VMT TBM Guidance Systems including SLS System for curved pipe jacking and TM system for TBM drives.
    • DMT Gyromat 2000 and 3000 for high precision independent checking of tunnel azimuth
    • Tamrock Visual Tunelling Software for control of Automatic Drilling Jumbos

 

The Top image shows analysis of Half Barrels captured during face profiling and compared with drilling records from a fully automated Jumbo. This allows easy checking of drilling quality.

 

Photo below shows navigation of same Jumbo,

 

 

End of the Job, a Lined Tunnel ready for operation.

 

 

 

 

 

 

 

 

 

 

Controlling alignment with High Precision Gyroscope