List of products by author: F. Finseth

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  Exploring planned tunnel alignment with directional core drilling

  Abstract: Directional core drilling (DCD) affords design engineers accurate imaging of the geology along the tunnel’s trajectory. The collected core as well as the borehole can be examined and provide a verified account of the rock formation, recording position, dimension and properties of weakness zones, and geological anomalies. Before initiating a directional borehole, careful planning is needed....

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