• Title/Summary/Keyword: engineering geology

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A Short Note on 3-Dimensional Slope Stability Analysis (3차원 사면안정해석에 관한 소고)

  • 서용석;윤운상
    • The Journal of Engineering Geology
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    • v.14 no.2
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    • pp.235-241
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    • 2004
  • 사면활동은 삼차원적인 토괴 혹은 암괴의 입체적 움직임의 산물이며 여러 가지 복잡한 지질학적 요인에 의하여 발생하고 있다. 하지만 사면안정해석은 일반적으로 이차원적으로 수행됨으로써 해석모델을 극히 단순화시키고 있다.(중략)

지질공학적 사고에 대한 인식의 전환

  • 김영기
    • The Journal of Engineering Geology
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    • v.10 no.3
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    • pp.273-275
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    • 2000
  • Engineering Geology를 필자는 지질공학(地質工學)이라 한다. 지질공학은 지반(地盤)의 토질 및 암석의 거동을 역학적인 관점에서의 지질역학(地質力學, Mechanical Geology)과 공학적 판단을 가하여 실제의 공사 등에 응용되는 기초학문이다. 이 분야에서의 중요 부분은 토목 시공 과정 또는 시공후에 발생할수 있는 지질적 문제(지질약선대의 문제 및 지질역학적 문제)등 에 대한 조사연구인 것이다. 따라서 지질공학자는 암반의 기계적인 응답에 대한 요소들을 지질도에 표시하여 시공상의 문제점을 검토, 연구하여 착공여부를 결정하고 지반보강 또는 지질개선을 실시케한다. 문제 중 지반의 거동은 물질 자체의 성질과 불연속성면에 있다. 물질자체의 성질은 입자의 크기에 있고 구조적 집합성에 있는 것이다. 불연속성면은 미세한 균열에서 거대한 단층면에 이르기까지 존재하며, 구조지질역학적 성격에 있다. (중략)

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Adhesion of clay to metal surface; Normal and tangential measurement

  • Basmenj, Amir Khabbazi;Ghafoori, Mohammad;Cheshomi, Akbar;Azandariani, Younes Karami
    • Geomechanics and Engineering
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    • v.10 no.2
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    • pp.125-135
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    • 2016
  • Adhesion in geotechnical engineering is the interaction between cohesive soil and a solid surface which can cause clogging in mechanized tunnelling through clayey formations. Normal piston pull out and modified direct shear tests were performed on clayey soil samples to determine which type of adhesion stress, normal or tangential, could be most effectively measured. Measured values for normal adhesion ranged from 0.9 to 18 kPa. The range of tangential adhesion was 2.4 to 10 kPa. The results indicate normal adhesion results were more accurate than those for the modified direct shear test that measure tangential adhesion. Direct shear test on identical samples did not show any correlation between measured cohesion and normal adhesion values. Normal adhesion values have shown significantly meaningful variation with consistency index and so are compatible with the base of field clogging assessment criteria. But tangential adhesion and cohesion were not compatible with these assessment criteria.

Application of the Arrhenius Equation in Geotechnical Engineering

  • Yoon, Hyung-Koo
    • The Journal of Engineering Geology
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    • v.24 no.4
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    • pp.575-581
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    • 2014
  • The reliable measurement of geotechnical properties in cold regions should account for their fluctuations with temperature. The objective of this paper is to introduce a chemical model based on the Arrhenius equation that can predict the properties of materials as their temperature changes. The model can monitor phases and reaction rates as they change with temperature. It has been already applied in the fields of geology, construction, chemistry, materials engineering, and food science. The application of the Arrhenius equation requires a reliable estimate of the activation energy. Therefore, this study also demonstrates several methods for evaluating activation energy in different contexts through summaries and reviews of previous research related to the Arrhenius equation. This paper may be of wide use in obtaining temperature-dependent parameters in geotechnical engineering.

A Proposal of Geological Investigation method Concomitant with Ground Construction : In the Light of Southeast Korean peninsula. (건설공사에 수반되는 지질조사 방법에 대한 제안 : 한반도 동남부 지역을 중심으로)

  • 류춘길;김성욱;이현재;정성교
    • Proceedings of the Korean Geotechical Society Conference
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    • 2002.03a
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    • pp.87-92
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    • 2002
  • Engineering geological studies were conducted for igneous rocks in southeast Korean peninsula. The purpose of the study is to establish zoning in view of engineering geology in ground construction. For engineering geological implication, lithology, lineament structure and discontinuities were surveyed and analysed. Using constructed data, We compared geological and engineering geological characteristics and made out the detailed engineering geological map. The map responses engineering characteristics such as weathering degrees, discontinuity systems of different rock types.

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