Abrasiveness and its influence on the performance in continuous driving
DOI:
https://doi.org/10.4067/S0718-28132013000100001Keywords:
cutting tool wear, abrasiveness, BM performanceAbstract
The use of Tunnel Boring Machines TBM is becoming more and more frequent although its optimization requires the accurate evaluation of various geotechnical risks, among them, the effect of soil abrasiveness in the cost and planning of a given project. Tool wear is more difficult to calculate than the rest of the machine parameters, due to the complexity of the interaction between cutting tools and ground. In this piece of work data is used from a tunnel real case in mixed ground rock-soil to examine the result of various methodologies for the prediction of TBM penetration. Also some wear predictions are examined and a new method for the evaluation of the geomaterials abrasiveness is described and applied which can be applied both to loose materials and rock.
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