Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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The Effect of the Thermal Stress on the Transport Property of Pocheon Granite

열응력이 포천화강암의 투수성에 미치는 영향

  • 윤웅균 (세명대학교 자원환경공학과)
  • Published : 1997.09.01
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Abstract

A transient pulse methos has been used to measure the permeability of Pocheon granite pre-heated from $25^{\circ}C$ to $600^{\circ}C$ at effective pressure up to 32MPa. The permeability of whole rock ranged from 0.72 $\mu$d at 10MPa to 0.20 $\mu$d at 32MPa. The permeability of rock heated to $600^{\circ}C$ ranged from 18.07$\mu$d at 10MPa to 6.39$\mu$d at 32MPa. Confining pressure has greater effects on the rocks thermally treated to lower thermal-cycle temperatures than on the higher thermally treated rocks. The increase of permeability is most pronounced between 40$0^{\circ}C$ and $600^{\circ}C$. Below 40$0^{\circ}C$, permeability increase is expected to be associated with the formation of new cracks and widening of preexisting cracks, whereas above 40$0^{\circ}C$, permeability increase is expected to reflect widening of cracks. Using the equivalent channel model, author shows that the exponent n in the relationship relating the permebility(k) to porosity($\phi$) by k∝$$\phi$^n$ falls in the range 2.7$\leq$n$\leq$3.0.

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References

  1. 터널과 지하공간(한국암반역학회지) v.1 no.2 고온암체의 에너지개발을 위한 세계기술 동향 강대우
  2. 한국자원공학회지 v.30 no.3 하중조건과 절리의 거칠기가 암석의 투수성에 미치는 영향 윤용균;이희근
  3. 터널과 지하공간(한국암반역학회지) v.6 no.1 열응력이 암석의 역학적 거동과 투수성에 미치는 영향-Ⅰ.역학적 거동 윤용균;이희근
  4. 터널과 지하공간(한국암반역학회지) v.5 no.1 고온하에서 암석의 열충격, 열팽창 및 열파괴에 관한 연구 이형원;이정인
  5. 유체역학 조강래;유정열;강신영
  6. Proc. 20th U.S.Symp. Rock Mechanics Effects of slow uniform heating on the physical properties of the Westerly and Charcoal granites Bauer, S. J.;Johnson, B.
  7. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. v.23 no.3 The effective pressure law for permeability in Chelmsford granite and Barre granite Bernabe, Y.
  8. J. Geophys. Res. v.73 no.6 Permeability of granite under high pressure Brace, W. F.;Walsh, J. B.;Frangos, W. T.
  9. Geophy. Res. Lett. v.21 no.11 Variations of connected porosity and inferred permeability in a thermally cracked granite G raud, Y.
  10. J. Geophy. Res. Lett. v.87 no.B11 Elastic moduli,thermal expansion, and inferred permeability of two granites to 350℃ and 55 Megapascals Heard, H. C.;Page, L.
  11. Int. J. Roc Mech. Min. Sci.&Geomech. Abstr. v.27 no.3 Post-test assessment of simulations for in situ heater tests in basalt-Part Ⅱ.Comparison of predicted and measured response Hocking, G.;Williams, J. R.;Mustoe, G. G. W.
  12. J.Pet. Tech. A laboratory study of low-permeability gas sands Jones, F. O.;Owens, W. W.
  13. Int. J. Roc Mech. Min. Sci.&Geomech. Abstr. v.16 The permeability of whole and jointed Barre granite Kranz, R. L.;Frankel, A. D.;Engelder, T.;Scholz, C. H.
  14. Proc. 22nd U.S.Symp. Rock Mechanics Elastic moduli, thermal expansion, and inferred permeability of Climax quartz monzonite and Sudbury gabbro to 500℃ and 55 MPa Page, L.;Heard, H. C.
  15. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. v.19 Thermal stress analysis in rocks with nonlinear propertise Wai, R. S. C.;Lo, K. Y.;Rowe, R. K.
  16. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. v.18 Effect of pore pressure and confining pressure on fracture permeability Walsh, J. B.
  17. J. Geophys. Res. v.89 no.B11 The effect of pressure on porosity and the transport properties of rock Walsh, J. B.;Brace, W. F.
  18. Water Resour. Res. v.16 Validity of cobic law for fluid flow in a deformable rock fracture Witherspoon, P. A.;Wang, J. S. Y.;Iwai, K.;Gale, J. E.