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Keywords: pipe roof
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Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-836
... Abstract The pipe roofing method is one of the widely used excavation support techniques for conventional tunneling. It is to install steel (or fiber glass) pipes in a canopy shape around the area to be excavated and then to excavate the soils under the protection of the pipe roof. This paper...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-976
... ABSTRACT: The increased use of pipe roof umbrella systems as a pre-support method necessitates the need for a standardized approach to determine the basic design parameters during design. The knowledge gained by in situ measurements using in place inclinometer chains were used to identify key...

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