Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2005.10a
- /
- Pages.285-289
- /
- 2005
암반공학적 측면에서본 신생대 암반비탈면의 공학적 문제 및 대책
- Shin, Hee-Soon (Division of Geotechnical Engineering, Korea Institute of Geoscience & Mineral Resources)
- 신희순 (한국지질자원연구원)
- Published : 2005.10.07
Abstract
The Cenozoic Era consists of two period , the Tertiary and the Quaternary Period. Weak rock types may include areas containing: 1) poorly cemented or uncemented sediments, 2) highly weathered rock, or 3) fault lines. Especially this paper deal with poorly cemented or uncemented sedimentary rocks in slope. Mechanical weathering is caused by physical processes such as absorption and release of water, and changes in temperature and stress at or near the exposed rock surface. It results in the opening of discontinuities, the formation of new discontinuities by rock fracture, the opening of grain boundaries, and the fracture or cleavage of individual mineral grains. Decomposition causes some silicate minerals such as feldspars to change to clay minerals. There was a strong negative correlation between water absorption and important engineering properties such as strength and durability.