Highways Agency Report

             Shelfmark: SSR/TRL/IN1
       Personal author: Hudson J A
                 Title: Ground quality assessment: channel tunnel machine
                        erection chamber - October 1974
             Publisher: Transport and Road Research Laboratory, 1974
  Physical description: 7p., charts
                 Price: Unpriced
                Series: TRRL Internal Note IN 0053/74
       Notes - general: Abstract: Measurements showed that the fac indexing
                        system developed at the tunnelling trials at Chinnor
                        could be used satisfactorily under the different
                        conditions and in the different chalk of the chalk was
                        found to be 6.7 MN/m2 (970 psi).  The average
                        discontinuity spacing was 0.33 m, and most of the
                        discontinuities were sub-parallel to the tunnel axis
                        indicating that they have resulted from the excavation
                        process - either by stress changes of weathering
                        effects.
               Keyword: Land Analysis
               Keyword: Land Use
 TRRL INTERNAL NOTE
  copy:1       id:54046000301257      library:SSR          location:SSR-SHELF