List of products by author: M. Noronha

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  A Soil TBM Based on Hydro-Excavation and Extruded Lining

  Abstract: There is plenty of room to enhance the current soil Tunnel Boring Machines (TBMs). The present article introduces a novel semi-mechanized tunneling method for soil excavation that uses high-pressure waterjets and concrete extrusion. Compared to conventional excavation tools (fracture, friction and wear), hydro-excavation has a higher power-to-weight ratio, faster advance rates and lower wearing...

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  Extruded Concrete Lining

  Abstract: The most commonly used methods for tunnel construction are the NATM (New Austrian Tunneling Method) and the TBMs (Tunnel Boring Machines). These techniques typically use sprayed concrete and precast segments, respectively.Extruded Concrete Lining (ECL) has recently been used as an innovative alternative to tunnel lining. This technique was developed in the last century by European and Japanese...

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