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Publications by [Pells P. J. N.]

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<p>Rock Quality Designation (RQD), was introduced by Don Deere in the mid-1960s as a means of using diamond core to classify rock for engineering purposes. Subsequently it was incorporated into the Rock Mass Rating and Q-system classification methods which, ...
Reference: Canadian Geotechnical Journal 2016
It is inappropriate, if not meaningless, to attempt to apply limit state design methods, such as those encapsulated in Eurocode 7, to the design of primary support for tunnels in rock, particularly weak rock or any rock under high stress. By reference to some ...
Reference: Tunnels & Tunneling International, February 2011
This paper presents case studies for both rock mass modulus and rock mass shear strength in an attempt to assess the validity of the approach of using GSI and the Hoek-Brown criterion. It is concluded that for some rock masses the method works well, but in ...
Reference: 1st Southern Hemisphere International Rock Mechanics Symposium an ISRM-Sponsored Regional Symposium held in Perth, Australia, September 2008
This paper questions the application of rock mass classification systems in engineering geology problems.
Reference: SAIMM, SANIRE and ISRM 6 th International Symposium on Ground Support in Mining and Civil Engineering Construction
This paper presents the view that rock mass classification systems are not enough for final design, from experience with major tunnels and cavern projects in the Sydney region.
Reference: Tunnels & Tunnelling International | April 1, 2007 | Pells, P.J.N.; Bertuzzi, R.
This paper presents the rock mass parameters of Hawkesbury Sandstone
Reference: Australian Geomechanics Vol 39 No 3 September 2004
<p>The analytical design of rock bolt and shotcrete support of roofs of wide span tunnels under moderate cover in Sydney&rsquo;s Hawkesbury Sandstone is described. The simple process allows rapid parametric studies to be carried out prior to detailed numerical ...
Reference: Australian Geomechanics – June 2002
Details are given of the analytical methods used to design rockbolts and shotcrete support for tunnels and large span caverns under relatively low cover in the near horizontally bedded Triassic sandstones of the Sydney region.
Reference: International Journal of Rock Mechanics & Mining Sciences, Vol 39, 2002
This paper deals with a quick clay landslide at the area of Siak River in Sumatra .
Reference: Australian Geomechanics - June 1998
Permanent rock bolts in civil engineering are taken with a design life of at least 50 years. A review of recent Australian tunneling projects shows that substantial differences exist in the level of corrosion protection provided for permanent steel shafted ...
Reference: Tenth Australian Tunneling Conference, Melbourne 1999