Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Journal of Porous Media
Fator do impacto: 1.49 FI de cinco anos: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v12.i8.10
pages 725-748

Modeling of Coupled Heat Transfer and Reactive Transport Processes in Porous Media: Application to Seepage Studies at Yucca Mountain, Nevada

Sumit Mukhopadhyay
Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
Eric L. Sonnenthal
Lawrence Berkeley National Laboratory, USA
Nicolas Spycher
Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

RESUMO

When hot, radioactive waste is placed in subsurface tunnels, complex changes are expected to occur in the surrounding rocks. Water in the pore space of the medium may undergo vaporization and boiling. Subsequently, vapor may migrate out of the rock pore space, moving away through the permeable fracture network. This migration can be propelled by buoyancy, by the increased vapor pressure resulting from boiling, and through convection. In cooler regions, the vapor may condense, where it can drain through the fracture network. Thereafter, imbibition of water may lead to rewetting of the rock matrix. These thermal and hydrological processes may also bring about chemical changes in the rocks. Amorphous silica can precipitate from boiling and evaporation, and calcite from heating and CO2 volatilization. The precipitation of amorphous silica and calcite can lead to long-term permeability reduction. Evaporative concentration also results in the precipitation of gypsum (or anhydrite), halite, fluorite, and other salts. These evaporative minerals eventually redissolve after boiling ceases; however, their precipitation may lead to a temporary decrease in permeability. Reduction of permeability is also associated with changes in fracture capillary characteristics. In short, the coupled thermal-hydrological-chemical (THC) processes may dynamically alter the hydrological properties of the rock. A model based on the TOUGHREACT reactive transport software is presented here to investigate the impact of these THC processes on flow near an emplacement tunnel at Yucca Mountain, Nevada. We show how transient changes in hydrological properties caused by THC processes may lead to local flow channeling and seepage.


Articles with similar content:

USE OF FRACTURE AS A PLANAR SOURCE OF FLOW TO DETERMINE THE EFFECT OF A STAGNANT ZONE ON THE DILUTION OF A FRONT
Journal of Porous Media, Vol.14, 2011, issue 12
Somenath Ganguly
STUDY ON FLUID FLOW IN SANSTONE RESERVOIRS WITH MULTI-LEVEL FLOW MEDIUM
First Thermal and Fluids Engineering Summer Conference, Vol.19, 2015, issue
Yuetian Liu, YanFeng Liu, Wenkuan Zheng
THE ROLE OF FRACTURE CAPILLARY PRESSURE ON THE BLOCK-TO-BLOCK INTERACTION PROCESS
Journal of Porous Media, Vol.21, 2018, issue 11
Morteza Dejam
EXPERIMENTAL INVESTIGATION OF WATER VAPORIZATION AND ITS INDUCED FORMATION DAMAGE ASSOCIATED WITH UNDERGROUND GAS STORAGE
Journal of Porous Media, Vol.16, 2013, issue 2
Saeed Abbasi, Abbas Shahrabadi, Mohammad Saadat, Hassan Golghanddashti
EXPERIMENTAL METHODS AND APPLICATIONS OF DISSOLVED GAS DRIVING IN TIGHT OIL RESERVOIRS
Special Topics & Reviews in Porous Media: An International Journal, Vol.7, 2016, issue 4
Xizhe Li, Zhengming Yang, Xuewei Liu, Yunyun Wei