터널과지하공간 (Tunnel and Underground Space)

  • 제8권2호
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  • Pages.96-106
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  • 1998
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  • 1225-1275(pISSN)
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  • 2287-1748(eISSN)
한국암반공학회 (Korean Society for Rock Mechanics and Rock Engineering)
권호 표지

암석의 변형 및 파괴거동의 해석을 위한 균열모형 개발에 관한 연구

Development of a Mechanical Crack Model to Analyze Deformation and Failure Mechanism of Rock

  • 발행 : 1998.06.01
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초록

Rock contains discontinuities at all scales. These discontinuities make rock behave in a complex way. This paper discusses a new approach to underground design based on the theory of rock fracture mechanics. The mechanism of deformation and failure of coal was studied by observing the distributions of length, orientation and spacing of the pre-existing as well as stress-induced cracks. Different types of crack information. The crack information is dependent on the scale used. The cracks propagate along the intersections of the pre-existing cracks, and both extensile and shear crack growth occur depending on the direction of the load relative to the bedding planes. An analytical model that takes into account both shear and extensile crack growth was developed to predict the nonlinear stress-strain behavior of coal including strain-hardening and strain-softening.

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참고문헌

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