A TECHNICAL AND ECONOMIC EVALUATION OF WATER JET ASSISTED TUNNEL BORING
A full size mechanical mole outfitted with a high pressure water jet system was used to bore a section of tunnel in granite. Data collected in the laboratory and in the field are included in the report. Section 2 presents the equations pertaining to the hydraulic system. Section 3 details the relationships describing the hydraulic cutting of rock. Section 4 discusses the laboratory work done to evaluate the interaction between mechanical and water jet cutting systems. Section 5 presents a discussion of the field boring results obtained at Skykomish. In Section 6 a technical and economic evaluation of a hypothetical 20 foot diameter jet assisted machine boring Skykomish granite is presented. Finally, Section 7 contains the recommendations of work needed for the practical implementation of jet assisted tunnel boring.
- See also PB-254 616.
University of Utah, Salt Lake City307 Park Building
Salt Lake City, UT United States 84112
National Science FoundationResearch Applied to National Needs
Washington, DC United States 20550
- Hustrulid, W
- Publication Date: 1976-7-15
- Pagination: 160 p.
- TRT Terms: Benefit cost analysis; Boring; Cutting; Cutting tools; Economic conditions; Economic impacts; Excavation and tunneling; Field tests; Granite; Hydraulic equipment; Hydraulic jetting; Nozzles; Rock excavation; Rock mechanics; Rocks; Tunneling; Tunneling machines; Water cannons; Waterjets
- Old TRIS Terms: Cutting fluids; Hydraulic jets; Hydraulic systems; Rock tunneling
- Subject Areas: Bridges and other structures; Construction; Economics; Geotechnology; Highways; Maintenance and Preservation;
- Accession Number: 00155093
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NSF/RA-760174
- Contract Numbers: NSF-APR74-21784-A04
- Files: TRIS
- Created Date: Aug 31 1977 12:00AM