A new apparatus for the concurrent measurement of friction and permeability evolution in fault gouge

Ziyan Li, Derek Elsworth, Chaoyi Wang, Kyungjae Im

Research output: Contribution to journalArticle

Abstract

We introduce a new miniature double direct shear (mini-DDS) apparatus, housed within a standard-triaxial (TEMCO) pressure vessel, capable of concurrently measuring the evolution of frictional strength, stability, healing and along-fault permeability under in situ conditions of stress and temperature. The apparatus accommodates gouge samples (25 mm × 32 mm) and intact rock samples with confining and shear stresses and pore pressures up to ∼26 MPa. Permeability may be measured with applied flow rates ranging from 1.67 × 10−11 to 3.6 × 10−6 m3/s to a flow accuracy of 0.5% representing a lower bound of permeability >2.2 × 10−18 m2. Sliding velocities are in the range 0.1 μm/s to 0.67 cm/s with a frame stiffness of 0.067 kN/μm. We describe protocols and procedures for calibration and experiments and note the potential of the apparatus for both rapid and extended-duration measurements of friction-permeability evolution and healing. The apparatus returns measurements of friction and stability of reference materials of F110 quartz consistent with the literature while additionally allowing the concurrent measurement of permeability. Permeability of F110 quartz evolves in slide-hold-slide (SHS) experiments with increases during holds and decreases during subsequent slides. These observations are consistent with grain crushing and resultant wear products that reduce that permeability by clogging during slides with unclogging of the major fluid channels occurring during shearing.

Original languageEnglish (US)
Article number104046
JournalInternational Journal of Rock Mechanics and Mining Sciences
Volume121
DOIs
StatePublished - Sep 1 2019

Fingerprint

fault gouge
friction
permeability
Friction
Quartz
Pore pressure
Crushing
Pressure vessels
Shearing
Shear stress
Experiments
Rocks
Stiffness
Flow rate
Wear of materials
Calibration
Fluids
quartz
crushing
pore pressure

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

Cite this

@article{8cdc33b813644001bf3ecd0d3dac8794,
title = "A new apparatus for the concurrent measurement of friction and permeability evolution in fault gouge",
abstract = "We introduce a new miniature double direct shear (mini-DDS) apparatus, housed within a standard-triaxial (TEMCO) pressure vessel, capable of concurrently measuring the evolution of frictional strength, stability, healing and along-fault permeability under in situ conditions of stress and temperature. The apparatus accommodates gouge samples (25 mm × 32 mm) and intact rock samples with confining and shear stresses and pore pressures up to ∼26 MPa. Permeability may be measured with applied flow rates ranging from 1.67 × 10−11 to 3.6 × 10−6 m3/s to a flow accuracy of 0.5{\%} representing a lower bound of permeability >2.2 × 10−18 m2. Sliding velocities are in the range 0.1 μm/s to 0.67 cm/s with a frame stiffness of 0.067 kN/μm. We describe protocols and procedures for calibration and experiments and note the potential of the apparatus for both rapid and extended-duration measurements of friction-permeability evolution and healing. The apparatus returns measurements of friction and stability of reference materials of F110 quartz consistent with the literature while additionally allowing the concurrent measurement of permeability. Permeability of F110 quartz evolves in slide-hold-slide (SHS) experiments with increases during holds and decreases during subsequent slides. These observations are consistent with grain crushing and resultant wear products that reduce that permeability by clogging during slides with unclogging of the major fluid channels occurring during shearing.",
author = "Ziyan Li and Derek Elsworth and Chaoyi Wang and Kyungjae Im",
year = "2019",
month = "9",
day = "1",
doi = "10.1016/j.ijrmms.2019.06.005",
language = "English (US)",
volume = "121",
journal = "International Journal of Rock Mechanics and Mining Sciences",
issn = "1365-1609",

}

A new apparatus for the concurrent measurement of friction and permeability evolution in fault gouge. / Li, Ziyan; Elsworth, Derek; Wang, Chaoyi; Im, Kyungjae.

In: International Journal of Rock Mechanics and Mining Sciences, Vol. 121, 104046, 01.09.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A new apparatus for the concurrent measurement of friction and permeability evolution in fault gouge

AU - Li, Ziyan

AU - Elsworth, Derek

AU - Wang, Chaoyi

AU - Im, Kyungjae

PY - 2019/9/1

Y1 - 2019/9/1

N2 - We introduce a new miniature double direct shear (mini-DDS) apparatus, housed within a standard-triaxial (TEMCO) pressure vessel, capable of concurrently measuring the evolution of frictional strength, stability, healing and along-fault permeability under in situ conditions of stress and temperature. The apparatus accommodates gouge samples (25 mm × 32 mm) and intact rock samples with confining and shear stresses and pore pressures up to ∼26 MPa. Permeability may be measured with applied flow rates ranging from 1.67 × 10−11 to 3.6 × 10−6 m3/s to a flow accuracy of 0.5% representing a lower bound of permeability >2.2 × 10−18 m2. Sliding velocities are in the range 0.1 μm/s to 0.67 cm/s with a frame stiffness of 0.067 kN/μm. We describe protocols and procedures for calibration and experiments and note the potential of the apparatus for both rapid and extended-duration measurements of friction-permeability evolution and healing. The apparatus returns measurements of friction and stability of reference materials of F110 quartz consistent with the literature while additionally allowing the concurrent measurement of permeability. Permeability of F110 quartz evolves in slide-hold-slide (SHS) experiments with increases during holds and decreases during subsequent slides. These observations are consistent with grain crushing and resultant wear products that reduce that permeability by clogging during slides with unclogging of the major fluid channels occurring during shearing.

AB - We introduce a new miniature double direct shear (mini-DDS) apparatus, housed within a standard-triaxial (TEMCO) pressure vessel, capable of concurrently measuring the evolution of frictional strength, stability, healing and along-fault permeability under in situ conditions of stress and temperature. The apparatus accommodates gouge samples (25 mm × 32 mm) and intact rock samples with confining and shear stresses and pore pressures up to ∼26 MPa. Permeability may be measured with applied flow rates ranging from 1.67 × 10−11 to 3.6 × 10−6 m3/s to a flow accuracy of 0.5% representing a lower bound of permeability >2.2 × 10−18 m2. Sliding velocities are in the range 0.1 μm/s to 0.67 cm/s with a frame stiffness of 0.067 kN/μm. We describe protocols and procedures for calibration and experiments and note the potential of the apparatus for both rapid and extended-duration measurements of friction-permeability evolution and healing. The apparatus returns measurements of friction and stability of reference materials of F110 quartz consistent with the literature while additionally allowing the concurrent measurement of permeability. Permeability of F110 quartz evolves in slide-hold-slide (SHS) experiments with increases during holds and decreases during subsequent slides. These observations are consistent with grain crushing and resultant wear products that reduce that permeability by clogging during slides with unclogging of the major fluid channels occurring during shearing.

UR - http://www.scopus.com/inward/record.url?scp=85068179508&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068179508&partnerID=8YFLogxK

U2 - 10.1016/j.ijrmms.2019.06.005

DO - 10.1016/j.ijrmms.2019.06.005

M3 - Article

VL - 121

JO - International Journal of Rock Mechanics and Mining Sciences

JF - International Journal of Rock Mechanics and Mining Sciences

SN - 1365-1609

M1 - 104046

ER -