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Rock fracture closing moderated by pressure solution

Rock fracture closing moderated by pressure solution

Authors :
Mahmoudzadeh, Batoul
Liu, Longcheng
Moreno, Luis
Neretnieks, Ivars
Mahmoudzadeh, Batoul
Liu, Longcheng
Moreno, Luis
Neretnieks, Ivars
Publication Year :
2015

Abstract

Fracture apertures may decrease or increase by different mechanical and chemical mechanisms when the fractures are subject to stress. A model is presented to describe fracture closure/opening that accommodates pressure dissolution at contacting asperities as well as free-face dissolution/precipitation at free faces of the fracture and of the rock matrix. The derived analytical model accounts for the fact that dissolved minerals carried by flowing water along the fracture can not only diffuse into and out of the adjacent rock matrix but also at first diffuse into the stagnant water zone existing in part of the fracture plane and then from there into and out of the rock matrix adjacent to it. The analytical solution is used to study fracture closure/opening rate in a pseudo steady state, PSS, procedure. This simple model allows us to gain some insights into which processes and mechanisms have the larger impact on the fracture aperture under different circumstances.<br />QC 20160318

Details

Database :
OAIster
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1234192388
Document Type :
Electronic Resource
Full Text :
https://doi.org/10.1201.b18331-61