Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
권호 표지

Microcrack Developement in Gabbro, Sandstone and Marble due to Fatigue Stress

압축피로하중에 의한 반려암, 사암 및 대리암에서의 미세균열 발달

  • Published : 1995.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

Microcrack development in the macheon gabbro, the Sangju sandstone and the Jungsun marble due to fatigue stresses was investigated using differential strain analysis and microscopic observations from fluorescent-dyed thin sections. In the Macheon gabbro, various types of cracks, including gran boundary cracks, cleavage cracks, intragranular cracks adn intergranular cracks were developed. However, only grain boundary cracks were produced in the Sangju sandstone and the Jungsun marble due to fatigue stress. Many microcracks were produced due to fatigue stresses in the macheon gabbro. However, few microcracks were produced in the Sangju sandstone and the Jungsun marble. Fatigue stresses produced new microcracks in the Junngsun marble and the Macheon gabbro, but only pre-existing grain boundary cracks were lengthened in the Sangju snadstone. Most microcracks were produced within a few tens of numbers of cyclic loading, indicating that rocks under fatigue stresses will be damaged at the early stage of cyclic loading.

Keywords

References

  1. Jour. Geophy. Res. v.71 Dilatancy in the fracture of crystalline rocks Brace,W.F.;Paulding,B.W.Jr.;Scholz,C.H.
  2. Jour. Geophy. Res. v.73 Mechanism of creep in brittle rock Scholz,C.H.
  3. Jour. Geophy. Res. v.70 The effect of cracks on compressibility of rock Walsh,J.B.
  4. Jour. Geophy. Res. v.70 The effect of pressure on electrical resistivity of water saturated crystalline rocks Brace,W.F.;Orange,A.S.;Madden.T.R.
  5. Jour. Geophy. Res. v.71 Effect of pressure and saturating fluid on thermal conductivity of compact rock Walsh,J.B.;Decker,E.R.
  6. Jour. Geophy. Res. v.71 Seismic wave attenuation in rock due to friction Walsh,J.B.
  7. Jour. Geophy. Res. v.79 Seismic veolcities in dry and cracked solids O'connel,B.J.;Budiansky,B.
  8. Proc. 13th Symposium on Rock Mechaincs, ASCE Mechanical behavior of rock under cyclic fatigue Haimson,B.C.;Kim,K.C.
  9. Am. Soc. Testing and Materials, Special Technical Publication v.645 Effect of cyclic loading on rock, in dynamic geotechnical testing Haimson,B.C.
  10. Int. J. Rock. Mech. Min. Sci. v.10 Fatigue behaviour of rock Attewell,P.B.;Farmer,I.W.
  11. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr v.27 An experimental study and analysis of the behaviour of rock under cyclic loading Tao,Z.;Mo,H.
  12. Jour. Geophy. Res. v.79 Differential strain analysis : A new method of examining cracks in rocks Simmons,G.;Siegfried,R.;Feves,M.
  13. Jour. Geophy. Res. v.83 Characterization of oriented cracks with differential strain analysis Siegfried,R.;Simmons,G.
  14. J. Soc. Petrol. Engrs. v.3 Rock failure under dynamic loading conditions Burdine,N.T.
  15. Jour. Geophy. Res. v.85 The use of mechnical twinning in materials as a measure of shear stress magnitudes Tullis,T.
  16. Acta Metall v.33 Some effects of microcracks on the mechanical properties o brittle solids-Ⅰ. Stress, strain relations Fu,Y.;Evans,A.G.
  17. Jour. Geophy. Res. v.89 Near-surface in situ stress: 3. Correlation with microcrack fabric within the New Hampshire granite Plumb.R.;Engelder,T.;Yale,D.
  18. 지질학회지 v.30 피로하중에 의한 화강암류 암석의 미세균열 발달특성 장보안;최인선;김재동