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Physical Review E
Volumn 51, Issue 6, 1995, Pages
Percolation and the pore geometry of crustal rocks
Author keywords

[No Author keywords available]
Indexed keywords

EID: 0008487855     PISSN: 1063651X     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevE.51.R5181     Document Type: Article
Times cited : (15)
References (26)
  • 6
    • 84927497180 scopus 로고    scopus 로고
    • C. David, T. f. Wong, and J. Zhang, Pure Appl. Geophys., (to be published).
  • 13
    • 84927481220 scopus 로고    scopus 로고
    • G. Fischer and M. Paterson, in Fault Mechanics and Transport Properties of Rocks, edited by B. Evans and T. Wong, (Academic, New York, 1993).
  • 16
    • 84927508467 scopus 로고    scopus 로고
    • The approximation that loss of connectivity is linearly related to porosity reduction is based on experimental measurements of sandstone and hot pressed calcite aggregates at low porosities. Pore space connectivity is clearly reduced during porosity reduction, Ref. 11, Ref. 23, From the measurement of the pore size distribution, Ref. 7, Ref. 24, the hydraulic radius is approximately the same across a range of the porosity near the pore closure (percolation) threshold. While pore shrinkage may occur, the overall densification near pc is dominated by pore closure.
  • 17
    • 84927506393 scopus 로고    scopus 로고
    • A topologically disordered network would give a more realistic mapping of the rock pore space. We choose regular networks since, as shown by Jerauld and co workers protect, Ref. 18, Ref. 25, percolation properties of topologically disordered systems are essentially identical to regular networks with the same connectivity.
  • 19
    • 84927482108 scopus 로고    scopus 로고
    • The value of the percolation threshold depends primarily on the average coordination number. In the model the porosity at ``total'' connectivity is given for any Z by φZ(p=1) = φ /pc(Z).
  • 20
    • 84927461045 scopus 로고    scopus 로고
    • Transport in percolating continua can be described by different exponents from percolation in discrete networks. Our results are inconsistent with the continuum percolation model which gives an exponent for permeability e = 4.4, Ref. 26, Moreover, visual images of hot pressed calcite materials at low porosities, Ref. 23, show the pore space is primarily made up of tubular pores aligned along three grain edges. The pore structure therefore mimics a porous network.
  • 25
    • 84927499719 scopus 로고    scopus 로고
    • G. Jerauld, Ph.D. thesis, University of Minnesota, 1985 (unpublished).

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.