Kicheol Lee
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Experimental Study on the Performance Evaluation of Hybrid Liner to Prevent the Migration of Oil Pollutant Open
Oil contamination in subsurface soils caused by leaks from underground storage tanks (USTs) and industrial facilities has become a significant geo-environmental concern. Total petroleum hydrocarbons (TPH) migrate through the ground and are…
View article: Hyperspectral Remote Sensing and Artificial Intelligence for High-Resolution Soil Moisture Prediction
Hyperspectral Remote Sensing and Artificial Intelligence for High-Resolution Soil Moisture Prediction Open
Reliable field estimation of soil moisture supports hydrology and water resources management. This study develops a drone-based hyperspectral approach in which visible and near-infrared reflectance is paired one-to-one with gravimetric wat…
Stability Assessment of Road Pavement over Lava Caves Formed in Basalt Ground Open
Lava caves commonly occur in basaltic ground and can compromise roadway stability when present beneath pavements; however, their long-term effects remain insufficiently characterized. This study quantitatively evaluates how lava caves infl…
Verification of Construction Method for Smart Liners to Prevent Oil Spill Spread in Onshore Open
Onshore oil spills are directly related to soil contamination and significantly impact groundwater, vegetation, and human life. Immediate cleanup work is carried out when an oil spill occurs, but the currently used preventive measures are …
Development of a Background Filtering Algorithm to Improve the Accuracy of Determining Underground Cavities Using Multi-Channel Ground-Penetrating Radar and Deep Learning Open
In the process of using multi-channel ground-penetrating radar (GPR) for underground cavity exploration, the acquired 3D data include reflection data from underground cavities or various underground objects (structures). Reflection data fr…
Prediction of Water Content in Subgrade Soil in Road Construction Using Hyperspectral Information Obtained through UAV Open
In road construction, the compaction of the subgrade layer, which is one of the earthwork fields, is an essential procedure to support the pavement layer and traffic load. For the quality control of subgrades, water content must be measure…
Proposal of Construction Method of Smart Liner to Block and Detect Spreading of Soil Contaminants by Oil Spill Open
Soil is an important factor for public health, and when a soil contaminant occurs by oil spill, it has a great impact on the ecosystem, including humans. Accordingly, the area is blocked using a vertical barrier, and various remediation me…
Spectrum Index for Estimating Ground Water Content Using Hyperspectral Information Open
Quality control considerably affects road stability and operability and is directly linked to the underlying ground compaction. The degree of compaction is largely determined by water content, which is typically measured at the actual cons…
Prediction of Ground Water Content Using Hyperspectral Information through Laboratory Test Open
With the technological advances led by the fourth industrial revolution, automation has been implemented in road earthworks and paving in the road construction sector. For preparation of construction works, achieving an optimal degree of c…
Analysis of Horizontal Earth Pressure Acting on Box Culverts through Centrifuge Model Test Open
Underground space is being utilized due to the saturation of surface ground. The box culvert, as a representative infrastructure that has moved underground, is installed to protect such fixtures as electricity and gas. Because buried box c…
Analysis of Vertical Earth Pressure Acting on Box Culverts through Centrifuge Model Test Open
Due to the lack of surface space, most structures are heading underground. The box culvert is underground infrastructure and serves to protect the buried structure from the underground environments, but it has a different characteristic fr…
View article: Numerical Analysis of the Contact Behavior of a Polymer-Based Waterproof Membrane for Tunnel Lining
Numerical Analysis of the Contact Behavior of a Polymer-Based Waterproof Membrane for Tunnel Lining Open
Waterproof membranes have higher initial strength, faster construction, and better waterproofing than conventional sheet membranes. In addition, their polymer constituents have much higher interfacial adhesion and tensile strength than tho…
View article: Behaviour of Single and Group Helical Piles in Sands from Model Experiments
Behaviour of Single and Group Helical Piles in Sands from Model Experiments Open
Mainly used foundations of oil sand plants are drilled shafts or driven piles. As environmental regulations become increasingly strict, complete removal of the foundation is becoming more important during the step of plant dismantling. How…
Numerical Study of Pipe Pile Behaviour in Clays Considering Inner andOuter Shaft Frictions Open
Axial resistance of open-ended steel pipe pile is influenced by the external frictional resistance generated between the outer pile surface and its surrounding soils and the internal frictional resistance generated between the pile inner s…
View article: Numerical study on structural reinforced effects of concrete lining by spray-applied waterproofing membrane
Numerical study on structural reinforced effects of concrete lining by spray-applied waterproofing membrane Open
차수용 박층 멤브레인은 폴리머를 주요 구성성분으로 하는 재료로서 높은 부착성능과 시공성을 특징으로 하는 방수 재료이다. 차수용 박층 멤브레인은 일반적으로 콘크리트 또는 숏크리트 라이닝과 일체화되어 복합 구조체 형태로 방수 기능을 발현하는 재료이다. 본 연구에서는 지하구조물의 대표적인 구조물인 터널에서 차수용 박층 멤브레인 타설이 가능한 콘크리트 라이닝 재료에 차수용 박층 멤브레인을 적용할 경우 콘크리트 라이닝의 거동 변화를 …
Mechanical and Hydraulic Stabilizing Method of Steel Pipe Propulsion Tunneling Using Liquid Nitrogen Open
본 연구에서는 강관압입 공법 적용 시 굴착 선단부에서 수리학적 또는 역학적 불안정으로 인해 발생 가능한 붕괴를 방지하는 목적으로 액체질소를 주입하여 굴착선단부를 안정화하는 공법에 관하여 연구하였다. 강관압입 공법 적용 시 오거 내 중공(中空)에 액체질소 주입관(호스)를 넣어 오거 선단부에 액체질소를 분사하는 방식을 고안하였다. 실내 실험을 위해 직경이 1,000 mm인 강관압입관을 기준으로 1/5축소 모형오거 및 토조를 제작…
Temperature Effect on the Compaction Characteristic of Cohesionless Soil Open
흙의 다짐 특성에 영향을 주는 주요인자 중 하나인 온도는 지역과 계절에 따라 다양하게 변화하는 특성을 가진다. 최근 동토지방에서 많은 토목공사가 시행되고 있지만, 온도와 관련된 흙의 다짐기준 및 지침을 정량화할 수 있는 문헌은 미비한 실정이다. 따라서 본 연구는 온도에 따른 흙의 다짐특성을 시험을 통해 평가하고자 하였다. 시험을 위해 러시아 시베리아, 캐나다 앨버타 주 오일 샌드 지역 등에서 자주 쓰이는 성토재료인 모래의 온…