암반풍화도에 따른 지질공학적 특성 저감효과
Effects of Rock Weathering on the Degradation of Engineering Properties
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참고문헌
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초록
풍화작용은 심부에서 생성된 암석이 지표에서 파괴되고 변질되어 현재의 환경조건과 평형을 이루는 산물을 형성하는 과정이다. 본 연구에서는 국내에서 가장 분포면적이 넓은 화강암질암의 풍화단계별 시료를 채취하여 편광현미경관찰, X-선 회절분석, 전자현미경관찰, 화학분석, 물성시험등을 수행하였다. 실험결과에 의거하여 풍화에 의해 형성되는 2차광물, 특히 점토광물의 형성과정을 확인하였고, 풍화에 따른 암석의 공학적인 성질변화와 물성저하의 메카니즘을 규명하였다.
Abstract
Weathering is defined as a process by which surface rock, once formed in the deep ground, is broken down and altered to keep the equilibrium with the ambient environment. In this study granitic rock samples of different weathering grades were collected in the field and the microscopic observation, X-ray diffraction analysis, electron microscopic observation, chemical analysis, and rock property tests were carried out. Formation of secondary minerals, especially clay minerals, by weathering was identified and the mechanism for the change of engineering properties such as rock strength degradation was analyzed.Tunnel model test, Failure behaviour, Shallow tunnel, Unsupproted tunnel length
참고문헌 (17)
- "함수율의 변화에 따른 지진파 속도의 변화 특성에 관하여" (1978)
- "풍화현상에 수반되는 화강암의 물성변화에 관한 연구" (1990)
- "Code of Practice for Site Investigations", pp.~5930
- "Engineering classification and index properties for intact rock" (1966)
- "Weathering classification in the characterisation of rock Bulletin of the International Association of Engineering Geology", pp.123~127 (1976)
- "Some engineering aspects of rock weathering with field examples from Dartmoor and elsewhere", pp.139~185 (1971)
- "A quantitative study of the weathering of greywacke", pp.353~368 (1991)
- "A quantitative classification of the weathering and weatherability of rocks Procedings of the Fifth International Conference on Soil Mechanics and Foundation Engineering", pp.771~774 (1961)
- "An attempt to measure the degree of weathering of intrusive rocks from their physico- mechanical properties Proceedings of the First International Congress International Society of Rock Mechanics", pp.109~114 (1967)
- "Rock and soil descriptions and classification for engineering geological mapping Bulletin of the International Association of Engineering Geology", pp.235~274 (1981)
- "Engineering classification and index properties of a weathered granite", pp.233~244 (1978)
- "The engineering classification of residual tropical soils Proceedings of the Seventh International Conference on Soil Mechanics and Foundation Engineering", pp.1~10 (1969)
- "A revision of the description and classification of weathered granite and its application to granites in Korea", pp.31~48 (1988)
- "Weathering and its relation to mechanical properties of granite Proceedings of the Third International Congress International Society of Rock Mechanics", o(dera), pp.71~78 (1974)
- "An index of weathering for silicate rocks", pp.501~504 (1970)
- "Weathering of granite and associated erosional features in Hong Kong Bulletin of the Geological Society of America", 68, pp.1263~1291 (1957)
- "Pliutonic rocks-classification and nomenclature recommended by the IUGS subcommission of the systematics of igneous rocks", pp.26~32 (1973)