Estimation of rock discontinuity mean trace length and density from an outcrop in Wenchuan, China

Q. Wu, Pinnaduwa Kulatilake, H. M. Tang

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The equations exist in the literature to estimate corrected mean trace length and corrected two dimensional density of a discontinuity set using area sampling technique are critically reviewed. A shortcoming that exists with the equation proposed to calculate the corrected mean trace length of a discontinuity set based on a circular sampling window is pointed out. Also the major shortcomings that exist with the equation proposed to estimate the two-dimensional density of a discontinuity set using a circular window are pointed out. The discontinuity traces appearing in the outcrop in Yingxiu area are used along with rectangular windows to calculate the corrected mean trace length and two-dimensional density using Kulatilake and Wu's equations by incorporating the corrected relative frequency of each trace appearing on the two dimensional exposure. For both the corrected mean trace length and the two-dimensional density, the predictions based on the rectangular window methods are found to be quite accurate.

Original languageEnglish (US)
Title of host publication45th US Rock Mechanics / Geomechanics Symposium
Publication statusPublished - 2011
Event45th US Rock Mechanics / Geomechanics Symposium - San Francisco, CA, United States
Duration: Jun 26 2011Jun 29 2011

Other

Other45th US Rock Mechanics / Geomechanics Symposium
CountryUnited States
CitySan Francisco, CA
Period6/26/116/29/11

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ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Wu, Q., Kulatilake, P., & Tang, H. M. (2011). Estimation of rock discontinuity mean trace length and density from an outcrop in Wenchuan, China. In 45th US Rock Mechanics / Geomechanics Symposium