This report identifies and describes current practice and available methods for evaluating the influence of local ground conditions on earthquake design ground motions on a site-specific basis

<p>Predicting ground conditions ahead of the tunnel face has been one of the most important requirements of tunnel construction. This study investigated the development and application of a high resolution ultrasonic wave imaging system, which captures the ...

The inspection of the waste chips has consisted not only in the weight in the belt but also in the size and shape of the waste. Finally, the drilling parameters controlled were: - rate of advance - time of excavation - weight of material in the belt - thrust ...

<p>The focus of this paper is too list the required information for the design of a TBM and focus on the selection of the EPB or Slurry TBM method of face support based on the conditions of the project, from geology, alignment restrictions and local knowledge ...