Sydney Metro Rail Geotechnical Drilling Unearths Secrets
The geotechnical investigations for the Sydney Rail Project has sampled and analyzed previously unearthed geology aspects of the Sydney harbor. Since April, 2015, barges on the harbor have been drilled borings to 80 meters below the water's depth in an effort to map the contours of the harbor's previously poorly understood rock bed to find a path for the rail line.
Previous geotechnical explorations have not explored as deep as this project. Depth of competent rock is much deeper than expected.
Information for this article is taken from Sydney Morning Herold reporting. Further sampling pictures and videos are available.
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