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2D Shape Sensing of Bored Tunnel Soil Settlement

2D Shape Sensing of Bored Tunnel Soil Settlement

Posted on by Pierrick Vulliez

Sensuron technology was recently utilized to measure the settling movement related to a metro boring project in Beijing, China. A 2D sensor was placed in a reduced scale boring test setup to measure the soil displacement resulting from a simulated excavation process. The existing methods of Digital Image Correlation (DIC) and electronic-based displacement sensors, due to their inherent limitations, were unable to produce the desired measurements within the test volume. The fiber-based 2D shape sensor acquired an accurate soil displacement distribution along a continuous line of the surrounding soil and provided sub-millimeter validation of their settling models.

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