Comparisons of Drainage Performance on Coarse Grained Soils with Regard to Horizontal Drainage Type

Teawan Bang; Wanjei Cho; Seunghwan Seol

doi:10.14481/jkges.2023.24.11.25

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2023 Vol.24, Issue 11 Preview Page Next Page

Comparisons of Drainage Performance on Coarse Grained Soils with Regard to Horizontal Drainage Type 조립질 지반에서의 수평배수재 종류에 따른 배수성능 비교

1 November 2023. pp. 25-31

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Abstract

Horizontal drainage, which are representative dewatering method of domestic and foreign slope, are applied to reducing pore water pressure. Accordingly, several previous studies have been conducted, but horizontal drainage are standardized which is an unclean standard for a quantity calculation in filed. Therefore, this study presents field soil and laboratory model box to identify a drainage performance and influencing factors of various horizontal drainage. Furthermore, this study verifies the performance comparison of drainage shape or size according to different particle size distributions. In the outflow results for steady state, the study found that all samples are drained at a constant rate after a minimum of 3 minutes to maximum of 15 minutes. In the case of comparing the outflow per hour (Unit flux) in coarse grained soils, it found that drainage shape and size affect drainage performance. In the result, the future expected to be used basic data that experiment of drainage performance on fine grained soils and determine the quantity.

Keywords

Horizontal drainage

Drainage of slope

Coarse grained soils

Laboratory model box

대표적인 비탈면 배수공법인 수평배수공은 비탈면 내 간극수압을 감소시키기 위해 국내외에서 다수 활용하고 있다. 이에 따라 다양한 연구들이 선행되어 왔으나, 수평배수공의 수량을 산정하기 위한 명확한 설계기준이 없어 획일적으로 시공되고 있다. 따라서 본 논문에서는 다양한 수평배수공의 배수성능과 영향인자에 대한 메커니즘을 규명하고자 현장토를 이용하여 모형토조실험을 수행하였다. 또한, 배수재 형상이나 크기에 따른 배수성능을 비교하고자 입도분포가 다른 시료에서의 유출량 결과를 비교 및 검토하였다. 정상류 상태에서 배수실험을 확인하기 위해 유출량을 측정한 결과, 모든 시료에서 최소 3분에서 최대 15분 뒤 일정한 속도로 배수되는 것을 확인하였다. 조립질 지반에서 단일 시간당 유출되는 양(단위 유출량)으로 비교한 경우, 배수재 형상과 크기에 따른 배수효과가 상이하여 배수성능에 영향을 미치는 것을 확인하였다. 향후 세립질 지반에서의 배수 성능실험과 수량을 결정하기 위한 기초자료로 충분히 활용될 수 있을 것으로 기대된다.

키워드

수평배수공

비탈면 배수공법

조립질 지반

모형토조실험

References

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Information

Publisher :Korean Geo-Environmental Society
Publisher(Ko) :한국지반환경공학회
Journal Title :Journal of the Korean Geo-Environmental Society
Journal Title(Ko) :한국지반환경공학회 논문집
Volume : 24
No :11
Pages :25-31
Received Date : 2023-09-15
Revised Date : 2023-09-16
Accepted Date : 2023-10-23
DOI :https://doi.org/10.14481/jkges.2023.24.11.25

Journal of the Korean Geo-Environmental Society ISSN:1598-0820(Print) 2714-1233(Online) 한국지반환경공학회 논문집

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