December 2021
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Article
High-frequency InSAR displacement monitoring and trend detection analysis
Remote sensing data, and particularly space-based interferometric synthetic aperture radar (InSAR), is being integrated into many monitoring programs for tunneling…
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Emerging Tech
High-speed 3D subway tunnel inspection; A San Francisco BART case study
The trend in tunnel condition assessment is toward comprehensive 3D measurement combined with high-quality images that document and quantify damages…
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Workforce
Putting the focus on workforce sustainability
The title of this issue’s Chairman’s Column reflects one of the three key pillars of the UCA’s new strategic plan.…
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Article
Robbins develops rectangular tunnel boring machine for silver mine in Mexico
Developed by Robbins for use in rock up to 200 MPa UCS, the MDM5000 excavates with a reciprocating cutterhead and…
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