New approach to quantifying rock joint roughness based on roughness mobilization characteristics

Eun Soo Hong; In Mo Lee; Gye Chun Cho; Seok Won Lee

doi:10.1007/s12205-014-0333-5

New approach to quantifying rock joint roughness based on roughness mobilization characteristics

Eun Soo Hong, In Mo Lee, Gye Chun Cho, Seok Won Lee

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

This study explores the effect of normal stress levels and asperity scales on roughness mobilization characteristics through joint shear tests, and suggests a new method for quantifying rock joint roughness. Two-dimensional joint surface profiles were scanned by using a digital camera-based 3D scanner system, and were classified into a small scale of roughness (unevenness) and a large scale of undulation (waviness). Joint surface profile specimens, duplicated using a wire-cut electric discharge machining method, were tested for shear behaviors. For waviness showing non-stationary signals, the mobilized roughness is not constant but varies nonlinearly at normal stress levels. However, for unevenness showing noise and a stationary signal, the ultimate shear strength appears at a low normal stress level.

Original language	English
Pages (from-to)	984-991
Number of pages	8
Journal	KSCE Journal of Civil Engineering
Volume	18
Issue number	4
DOIs	https://doi.org/10.1007/s12205-014-0333-5
Publication status	Published - 2014 May

Keywords

mobilization
quantification
rock joint
roughness
roughness classification
shear mode

ASJC Scopus subject areas

Civil and Structural Engineering

Access to Document

10.1007/s12205-014-0333-5

Cite this

@article{a653be21631c47db8e16634e31965a3b,

title = "New approach to quantifying rock joint roughness based on roughness mobilization characteristics",

abstract = "This study explores the effect of normal stress levels and asperity scales on roughness mobilization characteristics through joint shear tests, and suggests a new method for quantifying rock joint roughness. Two-dimensional joint surface profiles were scanned by using a digital camera-based 3D scanner system, and were classified into a small scale of roughness (unevenness) and a large scale of undulation (waviness). Joint surface profile specimens, duplicated using a wire-cut electric discharge machining method, were tested for shear behaviors. For waviness showing non-stationary signals, the mobilized roughness is not constant but varies nonlinearly at normal stress levels. However, for unevenness showing noise and a stationary signal, the ultimate shear strength appears at a low normal stress level.",

keywords = "mobilization, quantification, rock joint, roughness, roughness classification, shear mode",

author = "Hong, {Eun Soo} and Lee, {In Mo} and Cho, {Gye Chun} and Lee, {Seok Won}",

year = "2014",

month = may,

doi = "10.1007/s12205-014-0333-5",

language = "English",

volume = "18",

pages = "984--991",

journal = "KSCE Journal of Civil Engineering",

issn = "1226-7988",

publisher = "Elsevier Inc.",

number = "4",

}

TY - JOUR

T1 - New approach to quantifying rock joint roughness based on roughness mobilization characteristics

AU - Hong, Eun Soo

AU - Lee, In Mo

AU - Cho, Gye Chun

AU - Lee, Seok Won

PY - 2014/5

Y1 - 2014/5

N2 - This study explores the effect of normal stress levels and asperity scales on roughness mobilization characteristics through joint shear tests, and suggests a new method for quantifying rock joint roughness. Two-dimensional joint surface profiles were scanned by using a digital camera-based 3D scanner system, and were classified into a small scale of roughness (unevenness) and a large scale of undulation (waviness). Joint surface profile specimens, duplicated using a wire-cut electric discharge machining method, were tested for shear behaviors. For waviness showing non-stationary signals, the mobilized roughness is not constant but varies nonlinearly at normal stress levels. However, for unevenness showing noise and a stationary signal, the ultimate shear strength appears at a low normal stress level.

AB - This study explores the effect of normal stress levels and asperity scales on roughness mobilization characteristics through joint shear tests, and suggests a new method for quantifying rock joint roughness. Two-dimensional joint surface profiles were scanned by using a digital camera-based 3D scanner system, and were classified into a small scale of roughness (unevenness) and a large scale of undulation (waviness). Joint surface profile specimens, duplicated using a wire-cut electric discharge machining method, were tested for shear behaviors. For waviness showing non-stationary signals, the mobilized roughness is not constant but varies nonlinearly at normal stress levels. However, for unevenness showing noise and a stationary signal, the ultimate shear strength appears at a low normal stress level.

KW - mobilization

KW - quantification

KW - rock joint

KW - roughness

KW - roughness classification

KW - shear mode

UR - http://www.scopus.com/inward/record.url?scp=84899653046&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899653046&partnerID=8YFLogxK

U2 - 10.1007/s12205-014-0333-5

DO - 10.1007/s12205-014-0333-5

M3 - Article

AN - SCOPUS:84899653046

SN - 1226-7988

VL - 18

SP - 984

EP - 991

JO - KSCE Journal of Civil Engineering

JF - KSCE Journal of Civil Engineering

IS - 4

ER -

New approach to quantifying rock joint roughness based on roughness mobilization characteristics

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this