International Journal of Earth Sciences and Engineering

The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off


We discussed the relationship between rock abrasivity and tensile strength so as to provide clues for the choice of cutting head of tunnel boring machine. A total of 24 samples belonging to four lithologies were tested for abrasivity and uniaxial tensile strength. Correlation analysis indicated that rock abrasivity is not a mathematical function of tensile strength; rather, the two have a positive correlation in a qualitative sense. Two influence factors of rock abrasivity are contents of hard minerals (typically the quartz) and the mode and strength of mineral bonding (crystallization and cementation). We found that rock abrasivity is the result of combined action of several factors. In tunnel construction, the choice of cutting head of TBM should be based on consideration of the effect of several factors on rock abrasivity.

Keywords

Rock Abrasivity, Tensile Strength, Mineral Composition, Tunnel Boring Machine (TBM).
User
Notifications
Font Size