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A Study on the Infinite Slope Safty Factor Applied to the Roots Cohesion

뿌리 점착력을 적용한 무한사면 안전률에 관한 연구

Won-Il Choi*1
,
Eun-Hwa Choi2
,
Jin-Won Suh3
,
Seong-Kon Jeon4
최 원일*1
,
최 은화2
,
서 진원3
,
전 성곤4
1Member, Corresponding Author, Member. C.E.O
2Manager, Gyeonggi Disaster Management Institute
3Deputy general manager, Gyeonggi Disaster Management Institute
4Member, Professor, Department of Civil Engineering , Yeoju Institute of technology
*교신저자. *Corresponding Author. 
30 June 2016. pp. 13-24
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Abstract

The safety factor of an infinite slope tends to be analyzed as lower when the effects of root cohesion are not considered into the equation. Thus, it is essential to consider regional characteristics such as root cohesion and crown density in order to obtain a reasonable safety factor value. In this study, The safety factor of the landslide model, both before and after considering crown density and root cohesion, was calculated and a comparative analysis was carried out. The safety factor is increased by the effect of roots cohesion of the analysis results, the amount of increase in safety factor along the inclination of the slope angle has been analyzed with various things, the effect of reinforcing the roots cohesion, slope of the lower angle it was found that the higher the safety factor increase.

Keywords
Infinited Slope stability
Safety factor
Root cohesion
Crown Density
TRIGRS

얕은 토층의 무한사면 파괴가 예상되는 지역에서 안전율 계산에 영향을 주는 지역적 특징인 뿌리점착력을 고려하지 않은 무한사면 안전율은 뿌리점착력을 적용한 무한사면 안전율 보다 낮은 수치로 해석되는 경향이 있다. 따라서 합리적인 무한사면의 안전율을 계산하기 위하여 지역적 특징을 반영한 안전율 해석이 필요하다. 본 연구에서는 수목의 뿌리와 수관밀도가 무한사면의 안전율에 미치는 영향을 분석하기 위하여 기존 무한사면 안정해석 방법에 수관밀도를 고려한 뿌리 점착력 이론을 적용하여 안전율의 변화를 비교 분석하였다. 해석결과 뿌리점착력의 효과로 인하여 안전율이 증가하지만, 사면의 경사에 따라서 안전율의 증가량이 다른 것으로 분석 되었으며, 뿌리점착력의 보강 효과는 완만한 경사의 사면일수록 커지는 것으로 나타났다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 15
  • No :2
  • Pages :13-24
  • Received Date : 2016-04-12
  • Revised Date : 2016-05-19
  • Accepted Date : 2016-05-24
  • DOI :https://doi.org/10.12814/jkgss.2016.15.2.013
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