???? (Rock Classification)

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???? (Rock Classification)
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D C B A
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??????? (1)
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??????? (2)
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??????? (3)
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???????

• ????????
• ???????
• ????????
• 4. ???????

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• 4. ???????

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Terzaghi????? 1946
????????????????????????
??????????????????????????????????????
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Rabcewicz????? 1957
???????????????????
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Lauffer????? 1958
??????????????????????
???A?B?C?????Terzaghi???1?2?3????????????
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Müller????? 1958
??????????????????????????
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Müller???????? 1970
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• ???????
• ????????
• 4. ???????

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??????
1. ????? 2. ?????? 3. ?????? 4. ????? 5. ??????
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?????(?????????)
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?????(?????)
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????(???????)
Müller 1965
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??????
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RQD (Rock Quality Designation)
???????????????10cm??????? (Deere1966)
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???????RQD
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RQD?????
Bieniawski 1978
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JRC (Joint Roughness Coefficient)
Nick Barton et al. 1977
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???????

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• ???????
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• 4. ???????

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????????
???????????????
???????????????
1. RSR (Rock Structure Rating) Wickham et al.
1972 2. RMR (Rock Mechanics Rating) Bieniawski
1973 3. Q value Barton et al. 1974
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RSR (Rock Structure Rating)
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RMR (Rock Mechanics Rating)
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RMR????????
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Q value (rock mass Quality)
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Q value ?????
?????? RQD ????? Jn ???????? Jr ???????? Ja ??????
???? Jw ?????? SRF
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Q value ?????
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Q value ????????
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???????

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• 4. ???????

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RMR?Q????
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RMR?Q????(???)
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Lauffer??????RMR?Q
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????????????(RMR,Q)
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RMR
Q
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????????????(RQD)
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????????????(???)
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????????????(Q???)
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?????

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????????(??????)
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??????????(??)
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