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2023 Vol.24, Issue 4 Preview Page
Ground Subsidence Risk Grade Prediction Model Based on Machine Learning According to the Underground Facility Properties and Density

기계학습 기반 지하매설물 속성 및 밀집도를 활용한 지반함몰 위험도 예측 모델

Sungyeol Lee1
,
Jaemo Kang2*
,
Jinyoung Kim3
이 성열1
,
강 재모2*
,
김 진영3
1Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology, Postdoctoral Researcher
2Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology, Senior Researcher
3Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology, Senior Researcher
*Corresponding Author
1 April 2023. pp. 23-29
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Abstract

Ground subsidence shows a mechanism in which the upper ground collapses due to the formation of a cavity due to the movement of soil particles in the ground due to the formation of a waterway because of damage to the water supply/sewer pipes. As a result, cavity is created in the ground and the upper ground is collapsing. Therefore, ground subsidence frequently occurs mainly in downtown areas where a large amount of underground facilities are buried. Accordingly, research to predict the risk of ground subsidence is continuously being conducted. This study tried to present a ground subsidence risk prediction model for two districts of ○○ city. After constructing a data set and performing preprocessing, using the property data of underground facilities in the target area (year of service, pipe diameter), density of underground facilities, and ground subsidence history data. By applying the dataset to the machine learning model, it is evaluated the reliability of the selected model and the importance of the influencing factors used in predicting the ground subsidence risk derived from the model is presented.

Keywords
Ground subsidence
Underground facilities
Density of underground facilities
Machine learning
Ground subsidence risk prediction model

지반함몰의 주요 발생원인은 지하매설물의 손상으로 알려져 있다. 지반함몰은 상·하수관의 손상으로 인한 물길 형성에 따른 지반 내 토립자의 이동으로 공동이 형성되어 상부지반이 붕괴되는 메커니즘을 보이고 있다. 따라서 지반함몰은 지하매설물의 밀집도가 높은 도심지를 중심으로 발생하고 있으며, 사고 발생 시 인명 및 경제적 피해를 야기하므로 사고에 대한 대비가 반드시 필요하다. 이에 따라 지반함몰 위험을 예측하기 위한 연구가 꾸준히 수행되고 있으며, 본 연구에서는 ○○시의 2개 구를 대상으로 지반함몰 위험도 예측 모델을 제시하고자 하였다. 대상 지역의 지하매설물 속성 데이터(활용년수, 관직경)와 지하매설물 밀집도, 지반함몰 이력 데이터를 활용하여 데이터셋을 구축하고 전처리를 수행한 뒤, 기계학습 모델에 적용하여 최적의 평가지표가 도출되는 모델을 선정하였으며, 선정된 모델의 신뢰도를 평가하고 모델에서 도출되는 지반함몰 위험도 예측 시 활용된 영향인자의 중요도를 제시하고자 하였다.

키워드
지반함몰
지하매설물
밀집도
기계학습
지반함몰 위험 예측모델
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Information
  • Publisher :Korean Geo-Environmental Society
  • Publisher(Ko) :한국지반환경공학회
  • Journal Title :Journal of the Korean Geo-Environmental Society
  • Journal Title(Ko) :한국지반환경공학회 논문집
  • Volume : 24
  • No :4
  • Pages :23-29
  • Received Date : 2023-02-15
  • Revised Date : 2023-02-23
  • Accepted Date : 2023-03-09
  • DOI :https://doi.org/10.14481/jkges.2023.24.4.23
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