• Magazine of korean Tunnelling and Underground Space Association
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• v.24 no.3
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• pp.28-47
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• 2022

• Magazine of korean Tunnelling and Underground Space Association
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• v.26 no.2
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• pp.34-56
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• 2024

• Magazine of korean Tunnelling and Underground Space Association
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• v.26 no.1
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• pp.21-45
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• 2024

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.663-666
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• 2005

공간정보의 처리에는 방대한 양의 자료가 분석되어야 하므로 강력한 컴퓨터 하드웨어와 소프트웨어의 성능이 뒷받침 되지 못했던 80/90년대와 달리 최근에 비약적인 발전을 가져온 분야중의 하나이다. 공간자료구조는 지리정보시스템(GIS)의 핵심엔진으로서 이를 활용한 공간정보의 분석과 처리는 수많은 응용을 갖고 있으며 파생되는 응용분야가 날로 증가하고 있는 추세에 있다. 그러나 대부분의 지리정보는 지상에 대한 것으로서, 지하정보에 대한 연구는 지하정보의 비가시적인 특성상 현재 초기단계라고 할 수 있다. 본 논문은 탄성파를 이용하여 얻어진 지하 지층구조 정보를 분석하여 지층구조를 파악하고, 공간자료구조를 활용하여 지하 단층대를 분석하고 검색하는 시스템 개발 방법을 제안하고 이와 관련된 사항을 기술하였다. 지하 단층대의 확인 작업은 다양한 지상/지하 구조물의 안정성에 중요한 역할을 하는 자료가 된다. 공간자료구조를 활용하여 지하지층을 인식하는 시스템의 개발은 지질 전문가의 해석을 위한 전처리 시스템으로서 중요한 역할을 할 것이다.

• Journal of Korean Society for Geospatial Information Science
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• v.19 no.1
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• pp.63-70
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• 2011

The national spatial information systems project which is promoted by our country has been extended from existing 2-D geographic information to 3-D spatial information as the basic geo-spatial Information. Most of the construction of the ground geo-spatial information are completed or underway, on the other hand, the construction of the subsurface geo-spatial information has difficulty caused by the lack of the drilling data characterizing the subsurface. In terms of the construction of the geo-spatial information of the subsurface, the subsurface information is constructed and managed by the domestic institutions, but the subsurface information which is possessed by the institutions was not shared mutually so it is managed inefficiently. This study presented the 3-D national underground information DB design by dividing with the ground DB item which configures the state of the ground and the soil DB item which configures the state of the soil in order to increase the efficiency of the construction of the subsurface spatial information. The implementation & utilization of the national underground information application technology was reviewed by applying the constructed DB to the actual model area, and the national underground information knowledge-based community establishment plan was presented.

• Journal of the Korean Geotechnical Society
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• v.38 no.10
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• pp.17-29
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• 2022

Recently, the interest in integrated underground geospatial information mapping (IUGIM) to ensure the safety of underground spaces and facilities has been increasing. Because IUGIM is used in the fields of underground space development and underground safety management, the up-to-dateness and accuracy of information are critical. In this study, IUGIM and field data were classified, and the accuracy of IUGIM was improved by spatial interpolation. A spatial interpolation technique was used to process borehole data in IUGIM, and a quantitative evaluation was performed with mean absolute error and root mean square error through the cross-validation of seven interpolation results according to the technique and model. From the cross-validation results, accuracy decreased in the order of nonuniform rational B-spline, Kriging, and inverse distance weighting. In the case of Kriging, the accuracy difference according to the variogram model was insignificant, and Kriging using the spherical variogram exhibited the best accuracy.

• Journal of Korean Tunnelling and Underground Space Association
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• v.21 no.4
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• pp.535-543
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• 2019

This study examined the empirical meaning of skylight in underground space, and for this purpose, 29 questions were drawn, consisting of technical performance, functional performance, and behavioral performance. In addition, under the assumption that the meaning of the skylight will be clearly revealed through the comparison between the underground streets with and without the skylight, three underground streets with the skylight and three underground streets without the skylight of Japan were selected as the subjects of the study. Based on the results of the survey, descriptive statistical analysis and frequency analysis were conducted, and an independent sample T-test was conducted for each analysis, and correlation analysis was conducted to derive improvement priority. As a result of the analysis, it was found that skylight had a certain effect on the sense of time and imageability inside the underground commercial space. In addition, it was analyzed that skylight exerted important function in the qualitative aspect of underground commercial space. Lastly, the improvement rankings for three underground streets without skylight were derived in the order of sign/guide map, space diversity, maintenance, rest space, and floor design.The improvement rankings for three underground streets with skylight were drawn in order of resting space, diversity of space, temperature and humidity, air, and maintenance.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2010.04a
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• pp.297-302
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• 2010

대규모 지하공간은 지상공간에 비하여 화재취약요소가 많으며, 재해 발생 시 폐쇄적인 공간 특성으로 인하여 중대재해로 이어져 막대한 인명피해 및 재산손실을 가져올 수 있다. 본 연구는 대규모 지하공간의 방재 특성 분석 및 일본 "샤레오" 방재계획과 국내 C Mall의 방재계획 사례 연구를 통하여 지하공간의 화재 안전상 고려되어야 할 대책들에 대하여 고찰하였다.

• Magazine of korean Tunnelling and Underground Space Association
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• v.25 no.3
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• pp.28-45
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• 2023

• Journal of the Korea Society of Computer and Information
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• v.25 no.12
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• pp.173-186
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• 2020

In this paper, we design and implement a service system for mobile devices to utilize the integrated underground geospatial information map in underground exploration fields. The field utilization service system for mobile devices is designed to visualize tiled maps, 3D terrain information, underground structures, underground facilities, and ground information provided by the Integrated Underground Geospatial Information Map Management System according to current position. And It is designed to reflect the results obtained from field exploration in real time. Also, the proposed system is implemented to transfer and visualize the integrated underground geospatial information map in the form of a glTF format due to constraints on wireless networks and device characteristics of mobile devices. Implemented mobile service systems can prevent accidents in underground exploration field from occurring by providing users with accurate and integrated underground geospatial data by visualizing maps and geospatial objects in three dimensions at underground exploration fields. In addition, updated underground geospatial data is transmitted in real time to the Integrated Underground Geospatial Information Map Management Systems, which can maintain up to date and accuracy.