Preliminary surveying for tunnel building involves sensor arrangement with number of sensors distributed on tunnel wall receiving surface waves running from face of tunnel to sensors, using propagation model and transition time evaluation

摘要

The method involves generating a seismic wave in the advancement region (2) of the tunnel (1) using a stimulation device (10), receiving reflected waves with a sensor arrangement and evaluating the seismic waves using a predefined propagation model. The sensor arrangement has a number of sensors distributed along the tunnel wall (3) for receiving surface waves running from the face (4)of the tunnel to the sensors. An independent claim is also included for an arrangement for preliminary surveying for tunnel construction.