본문 바로가기
KERD
논문KCI 등재

취성파괴에 관한 고찰

Study of Brittle Failure

0

조회

0

다운로드

2

인용

0

참고문헌

키워드

주제분류자원공학

초록

암반구조물의 파괴는 초기응력의 크기, 무결암의 강도 그리고 단층이나 절리와 같이 암반 내에 존재하는 불연속면의 상태에 의해 좌우된다. 일반적으로 고심도에 건설되는 암반구조물의 경우 높은 현지응력과 공동 굴착에 따른 유도응력으로 인해 공동 경계면에서 스폴링이나 슬래빙과 같은 취성파괴가 발생할 수 있다. 최근 고심도에 건설되는 암반구조물이 증가함에 따라 취성파괴의 발생사례가 증가하고 있으며, 더욱이 국내의 저심도 구간에서도 스폴링 현상이 보고되어 취성파괴에 대한 연구의 필요성이 요구된다. 그러나 아직까지 취성파괴에 대해 명확하게 규명되지 않아 본 보고에서 취성파괴현상을 규명하기위해 수행되었던 기존 연구결과를 중심으로 취성파괴와 그 특징에 대하여 요약정리하였다.

Abstract

Failure around an underground opening is a function of in-situ stress magnitudes, intact rock strength and the distribution of fractures in the rock mass. At high in-situ stress, the failure process is affected and eventually dominated by stress-induced fractures preferentially growing parallel to the excavation boundary. This fracturing is often observed in brittle type of failure such as slabbing or spalling. Recent studies on the stress-induced damage of rock revealed its importance especially in a highly stressed regime. As the constructions of underground structures at deep depths increased, the cases of the brittle failure also increased and furthermore spalling was occurred in Korea at low depths. To improve the stability of the underground structures at highly stressed regime, the characteristics of brittle failure should be examined, but they have not yet been properly investigated. Therefore in this report the characteristics of brittle failure such as types, failure mechanism and modeling methods etc. were considered in all aspects, based on the previous researches.

참고문헌 (53)

  1. "수압파쇄법에 의해 측정된 국내 초기응력의 지체구조구별 분포 특성에 관한 연구" (2004), 서울대학교
  2. "이축 압축 시험에 의한 원형 공동 주변 암석의 취성파괴 특성" (2004), 서울대학교
  3. "암석파괴이론", pp.277~ (2002), 전남대학교 출판부
  4. "과지압 암반내 대규모 지하저장공동 주변 안정성 문제 발생 및 해결사례 고찰", pp.151~172 (2004), 한국지반공학회 암반역학위원회
  5. "미소파괴음 측정과 결합입자모델 해석에 의한 암석의 변형파괴" (2002), 서울대학교
  6. "Unstable and violent failure around underground openings in highly stressed ground" (1999), Queen's University at Kingdom
  7. "What requirements do the KBS-3 repository make on host rocks? Geoscientific suitability indicators and criteria for siting and site evaluation" (2000), Swedish Nuclear Fuel and Waste Management Company
  8. "Brittle failure of rock materials: Test results and constitutive models", pp.454~ (1995), Balkema
  9. "Mechanism of brittle fracture of rock International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts", pp.2 395~1 430 (1967)
  10. "Study of the brittle fracture process under uniaxial compression", pp.231~248 (1973)
  11. "Size and stress gradient effects on fracture around cavities", pp.167~186 (1992)
  12. "Modeling dilation in brittle rocks", pp.04~483 (2004)
  13. "Mller Lecture: Why rock mechnaics?", pp.975~994 (1995)
  14. "Instability of hard rock masses The role of tensile damage and relaxation" (1999), University of Waterloo
  15. "Deformation and fracture around cylindrical openings in rock International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts", pp.387~427 (1990)
  16. "Simulation of failure around a circular opening in rock", 39, pp.507~515 (2002)
  17. "A mechanical degradation index for rock", 38, pp.1193~1199 (2001)
  18. "Develoment of a local degradation approach to the modeling of brittle fracture in heterogeneous rocks", 39, pp.443~457 (2002)
  19. "A non-conventional view on rock mechanics and fracture mechanics" (1989)
  20. "Borehole breakouts in crystalline and granular rocks as indicators of in-situ stress", pp.81~87 (2003)
  21. "A new true triaxial cell for testing mechanical properties of rock and its use to determine rock strength and deformability", 37, pp.285~296 (2000)
  22. "Proceedings of 12th Annual Energy-Sources Technology Conference and Exhibition", pp.17~22 (1989)
  23. "Laboratory study of borehole breakouts in Cordova Cream sandstone a case of shear failure mechanism International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts", pp.1047~1056 (1993)
  24. "Mobilization of strength in brittle failure of rock" (2001), Queen's University
  25. "Modeling brittle failure of rock", 39, pp.731~741 (2002)
  26. "Brittleness of rock and stability assessment in hard rock tunnelling", 18, pp.35~48 (2003)
  27. "Numerical modelling of acoustic emissions and dynamic rock behavior" (1998), Keele University
  28. "Handbook of experimental stress analysis" (1966)
  29. "Rock fracture under static stress conditions" (1965)
  30. "Practical estimates of rock mass strength", 34, pp.1165~1186 (1997)
  31. "Support of underground excavations in hard rock", pp.215~ (1995), Balkema
  32. "Brittleness determination of rocks by different methods International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts", pp.389~392 (1974)
  33. "A brittleness index to estimate fracture toughness", 41, pp.343~348 (2004)
  34. "Underground works in hard rock tunnelling and mining" (2000), Melbourne
  35. "Micro-mechanical analysis of excavation disturbed zones around tunnels", pp.543~546 (2001)
  36. "Microscopic fracture processes in a granite", 31, pp.237~250 (1998)
  37. "Laboratory study of borehole breakouts in Lac du Bonnet granite a case of extensile failure mechanism International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts", pp.1039~1045 (1993)
  38. "Analysis of rockbursts that have occurred in a waterway tunnel in Korea", 41(3B), pp.~24 (2004)
  39. "The strength of massive Lac du Bonnet granite around undeground penings University of Manitoba" (1993)
  40. "The effect of cohesion loss and stress path on brittle rock strength", 34, pp.222~233 (1997)
  41. "Rock stability considerations for siting and construction a KBS-3 repository" (2001)
  42. "The progressive fracture of Lac du Bonnet granite International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts", pp.643~659 (1994)
  43. "Observation of brittle failure around a circular test tunnel", 34, pp.1065~1073 (1997)
  44. "The development of borehole breakouts in sandstone" (1984), Stanford University
  45. "Extensile cracking in porous rock under differential compressive stress Micromechanical modelling of quasi-brittle materials behavior", pp.263~280 (1992)
  46. "Pressure dependence of rock strength and transition from brittle fracture to ductile flow", pp.215~232 (1966)
  47. "Rock fracture and rockbursts - an illustrative study" (1997), South African Institute of Mining and Metallurgy
  48. "An interpretation of ground movements recorded during construction of the donkien-morien tunnel", pp.239~254 (1991)
  49. "Modeling notch-formation mechanisms in the URL mine-by test tunnel using bonded assemblies of circular particles", 35, pp.510~511 (1998)
  50. "Technical summary of AECL's mine-by experiment phase Ⅰ" (1996), Atomic Energy of Canada Limited
  51. "In-situ strength criteria for tunnel design in highly-stressed rock masses", 35, pp.261~278 (1998)
  52. "A simple extension strain criterion for fracture of brittle rock International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts", pp.469~474 (1981)
  53. "Compressive stress-induced microcracks in rocks and applications to seismic anisotropy and borehole stability University of California" (1989)

관련 논문AI추천

이 간행물의 다른 논문 (7건)