[논문]도로터널에서 MMS를 이용한 정밀안전진단 적용 사례

추진호; 박세준; 김동석; 노은철

doi:10.9711/ktaj.2024.26.2.113

도로터널에서 MMS를 이용한 정밀안전진단 적용 사례
An application of MMS in precise inspection for safety and diagnosis of road tunnel 원문보기

Journal of Korean Tunnelling and Underground Space Association = 한국터널지하공간학회논문집, v.26 no.2, 2024년, pp.113 - 128

추진호 (국토안전관리원 강원지역본부) , 박세준 (국토안전관리원 영남지역본부) , 김동석 (국토안전관리원 영남지역본부) , 노은철 (국토안전관리원 영남지역본부)

초록
AI-Helper

향상된 MMS (Mobile Mapping System)를 이용하여 도로터널 정밀안전진단 항목을 검토하고 분석하였다. MMS에 의한 적용 가능한 항목은 외관조사, 조사 및 비파괴시험, 구조안전성, 유지관리방안일 것이다. MMS의 차량속도가 너무 빠르면 점군데이터의 해상도가 낮아지고 너무 느리면 보정값 오차가 증가하는 경향을 보인다. 본 연구에 적용된 장비에서는 50 km/h 속도에서 측정이 효과적이다. MMS의 점군 자료에 근거한 균열폭을 판단하기에는 한계가 있으나 터널내 설비 현황과 방재관리기준과 부합되는지를 검토할 수있다. MMS의 3차원 점군은 횡단면 측량의 검토 및 종단면 측량의 변화에 적용될 수 있는데 이는 터널 전체에 대해 차량 한계를 직관적으로 검토할 수 있을 것이다. 시험 개수와 조사 위치를 무작위로 선정하는 현재 정밀안전진단의 측정과 비교하여 MMS의 연속된 환경조건 측정은 정밀도 높은 분석에서 효과적이며 의미가 있을 것이다.

Abstract ▼ AI-Helper

Items of road tunnel PISD (Precise Inspection for Safety and Diagnosis) were reviewed and analyzed using newly enhanced MMS (Mobile Mapping System) technology. Possible items with MMS can be visual inspection, survey and non-destructive test, structural analysis, and maintenance plan. The resolution of 3D point cloud decreased when the vehicle speed of MMS is too fast while the calibration error increased when it is too slow. The speed measurement of 50 km/h is determined to be effective in this study. Although image resolution by MMS has a limit to evaluating the width of crack with high precision, it can be used as data to identify the status of facilities in the tunnel and determine whether they meet disaster prevention management code of tunnel. 3D point cloud with MMS can be applicable for matching of cross-section and also possible for the variation of longitudinal survey, which can intuitively check vehicle clearance throughout the road tunnel. Compared with the measurement of current PISD, number of test and location of survey is randomly sampled, the continuous measurement with MMS for environment condition can be effective and meaningful for precise estimation in various analysis.

주제어

표/그림 (15)

그림 Fig. 1. Geological map (left) and section of tunnel (right)
그림 Fig. 2. Fixed points for benchmark outer tunnel
그림 Fig. 3. Location of Auxiliary points for calibration inside tunnel
그림 Fig. 4. Schematic array for enhanced MMS
그림 Fig. 5. Difference of x, y, z between T/S and MMS with 20 km/h (up), 50 km/h (down)
그림 Fig. 6. Accuracy of point clouds by IAKAR Separation solution with MMS
표 Table 1. Number of point clouds per square meter by MMS with various speed
표 Table 2. Possible items of PISD with MMS in road tunnel
그림 Fig. 7. Example of visual configuration with point clouds by MMS in 20 km/h speed
그림 Fig. 8. Usage of MMS for clearance (left), cloud points and image (right)
그림 Fig. 9. Clearance of tunnel height in longitudinal section
그림 Fig. 10. Variations of drainage condition depending on road lane
그림 Fig. 11. Difference of real section by MMS from blueprint
그림 Fig. 12. Distribution of carbonation depending on CO₂ concentration in tunnel
그림 Fig. 13. Distribution of chloride content depending on CO₂ concentration in tunnel

참고문헌 (22)

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상세보기
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상세보기

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