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http://dx.doi.org/10.9720/kseg.2021.3.283

Evaluation of Soil Compaction Using Gravity Field Interpretation and UAV-based Remote Sensing Information  

Kim, Sung-Wook (Geo-information Research Group Co., Ltd.)
Choi, Sungchan (Geo-information Research Group Co., Ltd.)
Choi, Eun-Kyoung (Geo-information Research Group Co., Ltd.)
Lee, Yeong-Jae (Geo-information Research Group Co., Ltd.)
Go, Daehong (Geo-information Research Group Co., Ltd.)
Lee, Kyu-Hwan (Department of Disaster Safety & Fire, Konyang University)
Publication Information
The Journal of Engineering Geology / v.31, no.3, 2021 , pp. 283-293 More about this Journal
Abstract
The homogeneity of the compacted ground was analyzed using drone-based remote terrain and gravity field data. Among the topographic elements calculated by the hydrological algorithm, the topographic curvature effectively showed the shape of the surface that occurred during the compaction process, and the non-uniformly compacted area could be identified. The appropriate resolution of the digital topography requires a precision of about 10 cm. Gravity field Interpretation was performed to analyze the spatial density change of the compacted ground. In the distribution of residual bouguer gravity anomaly, the non-homogeneously compacted area showed a different magnitude of gravity than the surrounding area, and the difference in compaction was identified through gravity-density modeling. From the results, it is expected that the topographic element and gravitational field analysis method can be used to evaluate the homogeneity of the compacted ground.
Keywords
compaction; non-uniformly; drone; topographic curvature; bouguer gravity;
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