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Title: Fault Slip Induced By Injection of Water and Pore Fluid Flow

Abstract

The model experiments which simulated shear slip induced by injection of pore fluid have been conducted under triaxial compressive stress condition using a roughened bare fault. The objective is to understand characteristics of the induced slip behaviour, especially after the slip initiation obeying Coulomb failure criterion and pore fluid behaviour associated with the induced slip. Experimental results showed that intermittent slip occurred in all the injection-induced slip experiments. Moreover, it was also found that the pore fluid flow into the fault increased instantaneously accompanying with dynamic slip, which represents a part of higher slip velocity (V > 0.05 mm/s, Vmax of 0.4 mm/s) in the intermittent slip. Quantitative estimation on the volume of the inflow of pore fluid during the dynamic slip suggested that a shear dilatancy would cause the instantaneous increase in pore fluid flow that occurred with the slip.

Authors:
; ;  [1]
  1. Graduate School of Environmental Studies, Tohoku University (Japan)
Publication Date:
OSTI Identifier:
20798645
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 833; Journal Issue: 1; Conference: 3. international workshop on water dynamics, Sendai (Japan), 16-17 Nov 2005; Other Information: DOI: 10.1063/1.2207101; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DILATANCY; FAILURES; FLUID FLOW; FLUIDS; INJECTION; SHEAR; SLIP; SLIP VELOCITY; STRESSES; WATER

Citation Formats

Nemoto, Katsumi, Moriya, Hirokazu, and Niitsuma, Hiroaki. Fault Slip Induced By Injection of Water and Pore Fluid Flow. United States: N. p., 2006. Web. doi:10.1063/1.2207101.
Nemoto, Katsumi, Moriya, Hirokazu, & Niitsuma, Hiroaki. Fault Slip Induced By Injection of Water and Pore Fluid Flow. United States. doi:10.1063/1.2207101.
Nemoto, Katsumi, Moriya, Hirokazu, and Niitsuma, Hiroaki. Mon . "Fault Slip Induced By Injection of Water and Pore Fluid Flow". United States. doi:10.1063/1.2207101.
@article{osti_20798645,
title = {Fault Slip Induced By Injection of Water and Pore Fluid Flow},
author = {Nemoto, Katsumi and Moriya, Hirokazu and Niitsuma, Hiroaki},
abstractNote = {The model experiments which simulated shear slip induced by injection of pore fluid have been conducted under triaxial compressive stress condition using a roughened bare fault. The objective is to understand characteristics of the induced slip behaviour, especially after the slip initiation obeying Coulomb failure criterion and pore fluid behaviour associated with the induced slip. Experimental results showed that intermittent slip occurred in all the injection-induced slip experiments. Moreover, it was also found that the pore fluid flow into the fault increased instantaneously accompanying with dynamic slip, which represents a part of higher slip velocity (V > 0.05 mm/s, Vmax of 0.4 mm/s) in the intermittent slip. Quantitative estimation on the volume of the inflow of pore fluid during the dynamic slip suggested that a shear dilatancy would cause the instantaneous increase in pore fluid flow that occurred with the slip.},
doi = {10.1063/1.2207101},
journal = {AIP Conference Proceedings},
number = 1,
volume = 833,
place = {United States},
year = {Mon May 15 00:00:00 EDT 2006},
month = {Mon May 15 00:00:00 EDT 2006}
}