Relationship between fractional strength and fault gouge generation from direct shear testing under constant normal displacement control

B. R. Crawford, B. G.D. Smart, B. T. Ngwenya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

The production of frictional wear debris (fault gouge) under optimum non-dilatant conditions conducive to maximum dynamic fragmentation has been undertaken utilising a novel direct shear machine. A wide variety of sedimentary lithologies have been tested under constant normal displacement control and a mechanistic model for the evolution of frictional resistance developed. X-ray diffraction quantitative mineral identification and laser diffraction particle sizing technologies have been employed to characterise the induced debris distributions. A relationship is presented between the frictional strength of the sliding surfaces and the specific surface area of the induced cataclastic debris.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - Rock Mechanics in Petroleum Engineering 1994
PublisherSociety of Petroleum Engineers (SPE)
Pages121-129
Number of pages9
ISBN (Print)9781555634643
Publication statusPublished - 1994
EventSPE/ISRM Rock Mechanics in Petroleum Engineering Conference 1994 - Delft, Netherlands
Duration: 29 Aug 199431 Aug 1994

Publication series

NameSociety of Petroleum Engineers - Rock Mechanics in Petroleum Engineering 1994

Conference

ConferenceSPE/ISRM Rock Mechanics in Petroleum Engineering Conference 1994
Country/TerritoryNetherlands
CityDelft
Period29/08/9431/08/94

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