Risk Assesment of Subsidence which utilized Fuzzy-FMEA

doi:10.15683/kosdi.2023.6.30.313

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2023 Vol.19, Issue 2 Preview Page Next Page

Original Article

Risk Assesment of Subsidence which utilized Fuzzy-FMEA Fuzzy-FMEA를 활용한 지반함몰 위험도 평가: 김대천¹*ㆍ정영민²ㆍ신동일³
Deacheon Kim¹*, YoungMin Jung², Dongil Shin³; ¹Ph.D. Student, Department of Disaster and Safety, Myongji University, Yongin, Republic of Korea
²Graduate Student, Department of Disaster and Safety, Myongji University, Yongin, Republic of Korea
³Professor, Department of Disaster and Safety, Myongji University, Yongin, Republic of Korea

30 June 2023. pp. 313-325

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Abstract

Purpose: According to the recent occurrence statistics of ground accidents, ground subsidence and subsidence have become social problems as the frequency has increased centering around the downtown areas. This study tried to clarify risk of detailed factors which have an effect on subsidence. Method: For the study, detailed risk factors of 28 foundations were mainly drawn through the materials, precedent studies, and research reports shown by analyzing JIS' accident cases from 2016 to September 6, 2022 and by taking advice from an excavation expert. And risk was assessed by conducting a survey on 12 subsidence experts from the universities, research institutes, and industries and applying Fuzzy-FMEA to it. Result: It has found that damage of sewer pipes is 24.99% of overall risk, followed by excavation work (17.34%), water pipes (14.84%), and poor compaction (refill) (13.93%). And it has found that risk of damaging utilities (water pipes, sewer pipes, and other utilities) is highest, followed by poor construction works (excavation work, damage of sewer and water pipes, and other utility work) and poor compaction (refill). Conclusion: This shows that risk of subsidence factors judged by experts is similar with JIS' cases of ground subsidence.

Keywords

Subsidence Hazard

Subsidence

Ground Subsidence

Fuzzy-FMEA

Risk Assesment

연구목적: 지반사고 발생통계에 따르면 최근 도심지를 중심으로 침하발생 및 지반함몰 빈도가 매년 증가하고 있어 사회적으로 문제로 대두되고 있다. 이 연구는 지반침하에 영향을 미치는 세부요인들의 위험도를 규명하고자 하였다. 연구방법: 연구를 위해 지하안전정보시스템의 2016년도부터 2022년 9월 6일까지의 사고사례 분석을 통해 나타난 자료와 선행연구, 연구보고서 그리고 굴착 전문가의 자문을 받아 28개의 지반침하 세부위험요인을 도출 주요하였고, 산·학·연 지반침하 전문가 12명을 대상으로 설문을 실시하여 Fuzzy-FMEA기법을 적용하여 위험도를 산정하였다. 연구결과: 하수관로의 손상이 전체 위험도의 24.99%로 그 다음으로 굴착공사 17.34%, 상수관로 14.84%, 다짐(되메우기) 불량이 13.93% 순으로 나타났으며, 매설물 손상(상수관로, 하수관로, 기타매설물)위 위험도가 높게 나타났으며, 다음으로 공사부실(굴착공사, 상하수관 손상, 기타매설물공사), 그리고 다짐(되메우기)불량 순으로 위험도가 높게 나타났다. 결론: 이는 전문가 입장에서 판단하는 지반침하 요인에 대한 위험도가 지하안전정보시스템의 지반침하사례와 비슷한 결과를 확인하였다.

키워드

지반침하 위험도

지반침하 세부요인

지반함몰

Fuzzy-FMEA

위험도 산정

References

Brady, B.-H., Brown, E.-T. (1985). Rock Mechanics for Underground Mining. Allen & Unwin, Crows Nest.
Chung, J.-S., Lee, S.-G., Lee, G.-Y., Jung, H.-W., Kim, H.-J. (2015). "A case study on the effects on underground structure due to changes in the groundwater level and ground stress." Journal of the Korean Geo-Environmental Society, Vol. 16, No. 9, pp. 13-21 (In Korean). 10.14481/jkges.2015.16.9.13
Jeong, H.-J. (2018). Analysis of Ground Subsidence Characteristics by Influence Factor through Laboratory Model Test. Ph. D. Thesis, Chonnam National University (In Korean).
Jeong, H.-S. (2018). Detection of Cavities Under Pavements using 2D Full Seismic Waveform Inversion Method. Ph. D. Thesis, Incheon National University.
Kim, J.-S. (2022). "A study on the characteristics of consolidation settlement of soft ground in the plains of the central region." Journal of The Korean Society of Disaster Information, Vol. 18, No. 4, pp. 706-712.
Kim, Y.-H., Kim, J.-B., Kim, D.-W., Han, J.-G. (2017). "Experimental study on generating mechanism of the ground subsidence of due to damaged waters supply pipe." Journal of Korean Geosynthetics Society, Vol. 16, No. 2, pp. 139-148.
Kuwano, K., Mari, S., Ryoko, S. (2010). "Study on the detection of underground cavity and ground loosening for the prevention of ground cave-in accident." Journal of Japan Geotechnical Society, Vol. 5, No. 2, pp. 219-229. 10.3208/jgs.5.219
Lee, J.-J., Kim, K.-D., Lee, H.-J. (2017). "Development of evaluation and analysis technologies for road sinkhole." Korean Society of Road Engineers, Vol. 2016, No. 6, pp. 5-6.
Lee, K.-C., Choi, B.-H., Park, J.-H., Kim, D.-W. (2018). "Numerical analysis and laboratory experiment of rapid restoration of underground cavity using expansive material without excavation." Journal of Korean Geosynthetics Society, Vol. 17, No. 1, pp. 55-64.
Lee, K.Y., Kang, S.J. (2014). Sinkhole Swallowing A Town - Cause and Counter measure. Gyeonggi Research Institute, Suwon (In Korean)
Min, K.-N., Lee, D-W., Kwon, Y.-K., Hong, C.-D. (2014). "A case study of the ground subsidence by mining area goaf." Journal of The Korean Society of Disaster Information, Vol. 2016, No. 6, pp. 5-6.
Park, J.-J. (2020). "Analysis of the effect of pavement crack depth of the cavity management grade." Journal of The Korean Society of Disaster Information, Vol. 16, No. 3, pp. 449-457.
Seoul Special City (2014). Special Management Measures for Road Sinking.
Yoon, T.-K., Shin, C.-G., Lee, J.-H., Ko, M.-H. (2016). "Case studies for ground settlement prevention." Journal of Civil Engineering, Vol. 2016, No. 10, pp. 17-18.

Information

Publisher :The Korean Society of Disaster Information
Publisher(Ko) :한국재난정보학회
Journal Title :Journal of the Society of Disaster Information
Journal Title(Ko) :한국재난정보학회논문집
Volume : 19
No :2
Pages :313-325
DOI :https://doi.org/10.15683/kosdi.2023.6.30.313

[1] Brady, B.-H., Brown, E.-T. (1985). Rock Mechanics for Underground Mining. Allen & Unwin, Crows Nest.

[2] Chung, J.-S., Lee, S.-G., Lee, G.-Y., Jung, H.-W., Kim, H.-J. (2015). "A case study on the effects on underground structure due to changes in the groundwater level and ground stress." Journal of the Korean Geo-Environmental Society, Vol. 16, No. 9, pp. 13-21 (In Korean). 10.14481/jkges.2015.16.9.13

[3] Jeong, H.-J. (2018). Analysis of Ground Subsidence Characteristics by Influence Factor through Laboratory Model Test. Ph. D. Thesis, Chonnam National University (In Korean).

[4] Jeong, H.-S. (2018). Detection of Cavities Under Pavements using 2D Full Seismic Waveform Inversion Method. Ph. D. Thesis, Incheon National University.

[5] Kim, J.-S. (2022). "A study on the characteristics of consolidation settlement of soft ground in the plains of the central region." Journal of The Korean Society of Disaster Information, Vol. 18, No. 4, pp. 706-712.

[6] Kim, Y.-H., Kim, J.-B., Kim, D.-W., Han, J.-G. (2017). "Experimental study on generating mechanism of the ground subsidence of due to damaged waters supply pipe." Journal of Korean Geosynthetics Society, Vol. 16, No. 2, pp. 139-148.

[7] Kuwano, K., Mari, S., Ryoko, S. (2010). "Study on the detection of underground cavity and ground loosening for the prevention of ground cave-in accident." Journal of Japan Geotechnical Society, Vol. 5, No. 2, pp. 219-229. 10.3208/jgs.5.219

[8] Lee, J.-J., Kim, K.-D., Lee, H.-J. (2017). "Development of evaluation and analysis technologies for road sinkhole." Korean Society of Road Engineers, Vol. 2016, No. 6, pp. 5-6.

[9] Lee, K.-C., Choi, B.-H., Park, J.-H., Kim, D.-W. (2018). "Numerical analysis and laboratory experiment of rapid restoration of underground cavity using expansive material without excavation." Journal of Korean Geosynthetics Society, Vol. 17, No. 1, pp. 55-64.

[10] Lee, K.Y., Kang, S.J. (2014). Sinkhole Swallowing A Town - Cause and Counter measure. Gyeonggi Research Institute, Suwon (In Korean)

[11] Min, K.-N., Lee, D-W., Kwon, Y.-K., Hong, C.-D. (2014). "A case study of the ground subsidence by mining area goaf." Journal of The Korean Society of Disaster Information, Vol. 2016, No. 6, pp. 5-6.

[12] Park, J.-J. (2020). "Analysis of the effect of pavement crack depth of the cavity management grade." Journal of The Korean Society of Disaster Information, Vol. 16, No. 3, pp. 449-457.

[13] Seoul Special City (2014). Special Management Measures for Road Sinking.

[14] Yoon, T.-K., Shin, C.-G., Lee, J.-H., Ko, M.-H. (2016). "Case studies for ground settlement prevention." Journal of Civil Engineering, Vol. 2016, No. 10, pp. 17-18.

Journal of the Society of Disaster Information ISSN:1976-2208(Print) 2671-5287(Online) 한국재난정보학회논문집

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