List of products by author: E. Palma

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  The use of umbrella arch method and rebars spiles, in the same road rock tunnel

  Abstract: The Morro Agudo is a road single tunnel, built in the south of Brazil, on the BR-101 federal highway, as showed in Fig. 1. With two lanes plus shoulder, and 1,007 m of extension, this tunnel was a key part to increase the capacity of that highway. In geological point of view, the tunnel is in a granitic rock mass, with presence of mature soil from weathering, with variable thickness at about 3...

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