Brown, I.R. 1974 Parnell railway tunnel: influence of ground conditions on vibration and lining performance. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report EG 200 9 p.
Abstract: The double track Parnell tunnel on the North Island Main Trunk Railway between Auckland and Newmarket Stations was built in 1915 to replace an adjacent single track tunnel built in 1873. During August 1974, the tunnel was used to investigate two aspects of ground conditions in connection with the Auckland Rapid Transit (ART) Project. Full scale tests are to be used in the tunnel to evaluate noise and vibration levels due to various rail track-bed designs that might be used for ART. As a preliminary to these, the subsurface layering above and longside the tunnels, and its possible effect on vibration responses was investigated. Furthermore the materials present were examined to see if they were similar to those along the proposed ART route. To obtain data relevant to the design of the ART tunnel linings an attempt was made to determine whether the rock above the tunnel lining is self-supporting. (auth)
