Study of Application for Using Nondestructive Method in Gravel Area

Hyung-Koo Yoon

doi:10.7843/kgs.2023.39.7.49

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2023 Vol.39, Issue 7 Preview Page Next Page

Study of Application for Using Nondestructive Method in Gravel Area 사석 성토 지역의 비파괴 조사 기법 적용성 연구

31 July 2023. pp. 49-56

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Abstract

Gravel is commonly employed to enhance the bearing capacity of foundations and provide stable support for structures. However, effectively assessing the ground characteristics in the presence of gravel poses significant challenges. This study aims to compare the resolution of ground containing gravel using electrical resistivity, elastic wave surveys, and ground penetration radar (GPR). Nondestructive methods are applied at construction sites where soil improvement is carried out using gravel. The experiments focus on shallow depths, and the obtained results cover depths up to 2 m. Both the electrical resistivity and elastic wave techniques exhibit similar behavior in their findings, indicating comparable outcomes. However, GPR has limitations in observing the characteristics of ground with gravel. Dynamic cone-penetration tests were conducted to validate these findings. The electrical resistivity and elastic wave profiles exhibited similar behaviors in localized areas, further supporting their compatibility and reliability.

Keywords

Dynamic cone-penetration test

Elastic wave

Electrical resistivity

Gravel

Ground penetration radar

사석은 원지반의 지지력을 확보하고 구조물을 안정하게 지지할 수 있도록 다양한 목적으로 활용되고 있지만 사석이 적용된 지반의 특성을 관찰하기는 많은 어려움이 있다. 해당 연구에서는 전기비저항 탐사, 탄성파 탐사 그리고 지표 투과 레이더를 활용하여 사석이 포함된 지반의 해상도를 비교하고자 하였다. 사석으로 성토를 수행한 건설 현장에서 해당 비파괴 탐사 기법을 적용하였으며, 얕은 심도를 목적으로 실험하여 심도 2m까지 결과를 도시하였다. 전기비저항 탐사와 탄성파 탐사는 유사한 거동을 보여주었지만, 지표 투과 레이더는 상대적으로 사석이 포함된 지반의 특성을 관찰하기에 한계를 보였다. 해당 기법을 검증하기 위하여 동적 콘 관입 시험을 수행하였으며, 전기비저항 및 탄성파 탐사 결과와 국부적인 영역에서 유사한 거동을 보였다.

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Information

Publisher :The Korean Geotechnical Society
Publisher(Ko) :한국지반공학회
Journal Title :Journal of the Korean Geotechnical Society
Journal Title(Ko) :한국지반공학회 논문집
Volume : 39
No :7
Pages :49-56
Received Date : 2023-06-28
Revised Date : 2023-07-10
Accepted Date : 2023-07-12
DOI :https://doi.org/10.7843/kgs.2023.39.7.49

Journal of the Korean Geotechnical Society ISSN:1229-2427(Print) 2288-646X(Online) 한국지반공학회 논문집

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