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Apr 26, 2012
Field Testing of Major Trenchless Technology Methods for Road Crossings
Authors: Mohammad Najafi, Brett Gunnink, George Davis, and Russ HumphreysAuthor Affiliations
Publication: Construction Research Congress: Wind of Change: Integration and Innovation
Abstract
Ground displacements and borehole stability are always of prime concern during trenchless technology installations under pavements, and in close proximity to existing buried utilities and structures. Stable boreholes also relate to successful completion of the projects. The Missouri Department of Transportation (MoDOT), University of Missouri — Columbia, Michigan State University, and several industry participants have joined forces to conduct a research program to evaluate borehole stability. The objective of this research is to study the ground movements caused by pipe jacking, auger and guided boring and horizontal directional drilling methods. The soil displacement in the vicinity of the cutterhead, reamer and at the ground surface will be examined. To conduct the research, several field installations were conducted at the University of Missouri's Capsule Pipeline Research Center during the summer of 2002. In addition, an actual road crossing with pipe jacking method was closely monitored. The results of these unique field evaluations will be incorporated in the MoDOT specifications and guidelines and a summary will be presented in this paper. This will bring cost saving information for future MoDOT projects.
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© 2003 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Authors
Affiliations
Mohammad Najafi
Director, Center for Underground Infrastructure Research and Education, Construction Management Program, Michigan State University, 205 Farrall Hall, East Lansing, MI 48824
Brett Gunnink
Department Head, Civil Engineering, 205 Cobleigh Hall; PO Box 173900, Montana State University-Bozeman, Bozeman, MT 59717-2111
George Davis
Geotechnical Liaison, Missouri Department of Transportation (MoDOT), Materials Laboratory, P.O. Box 270, Jefferson City, MO 65102
Russ Humphreys
Undergraduate Student, University of Missouri—Columbia, Department of Civil & Environmental Engineering, E2423 Engineering Building East, Columbia, Missouri 65211-2200
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