저변성퇴적암 사면에서 지질특성이 차별풍화에 미치는 영향 (Effect of geological characteristics on differential weathering of low-graded metasedimentary rock slopes)
| Author(s): |
Hae-Geun Jeong
Yong-Seok Seo Myung-Hyeok Ihm |
|---|---|
| Medium: | journal article |
| Language(s): | Korean |
| Published in: | Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집), 2013, n. 4, v. 15 |
| Page(s): | 375-385 |
| DOI: | 10.9711/ktaj.2013.15.4.375 |
| Abstract: | This study evaluates correlation between petrographic characteristics and weathering grade of low-graded metasedimentary rocks mainly consisting of phyllite. Weathering grade of rock material was determined based on the results of geological survey. The Schmidt hammer test was carried out to obtain estimates of strength of rock materials. Point counting and microscopic observation were also conducted to analyze mineral composition and to measure spacing of foliation for 9 rock specimens. As a result of microscopic analysis, as the weathering grade was lower, the quartz was found more in quantity, consequently making rock stronger against weathering process. On the other side, lower weathering grade of rock resulted in less content of mica which is weak against weathering process. In addition, the rock materials with closer foliation spacing are found to be weaker in strength and have higher weathering grade. |
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data sheet - Reference-ID
10394781 - Published on:
06/12/2019 - Last updated on:
16/04/2023
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