All Issue

2024 Vol.40, Issue 6 Preview Page
Slope Stability Analysis and Development of a Landslide Early Warning System for Mountain-Based Solar Power Plants

산지 태양광 발전시설의 비탈면 안정성 분석 및 물리기반 산사태 조기 경보 시스템 개발

Hwan-Hui Lim1
,
Jun-Hyuk Jang2
,
Ki-Il Song3
,
Tae-Hyuk Kwon4*
임 환희1
,
장 준혁2
,
송 기일3
,
권 태혁4*
1Member, Senior Researcher, Water Infrastructure Research Center, K-water Research Institute
2Member, Graduate Student, Dept. of Civil and Environmental Engineering, KAIST
3Member, Prof., Dept. of Civil Engineering, Inha Univ.
4Member, Associate Prof., Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Scienceand Technology
1정회원, 수자원공사연구원 선임연구원
2정회원, 한국과학기술원 건설및환경공학과 석사과정
3정회원, 인하대학교 토목공학과 정교수
4정회원, 한국과학기술원 건설및환경공학과 부교수
*Corresponding Author
31 December 2024. pp. 139-149
PDF XML Citation
Abstract

Recent climate change has considerably altered rainfall patterns and volumes, hampering the stability of solar power plants installed on mountain slopes. To ensure the safety of areas with solar power plants and minimize landslide damage, reliable slope stability assessments and effective landslide early warning systems (LEWSs) are essential. In this study, we integrated the load and design characteristics of solar power plants into an existing LEWS and applied it to the study area. Rainfall data were collected, and soil samples were obtained for laboratory experiments to analyze their physical and hydraulic properties. Based on these data, a numerical analysis program was employed to calculate the critical continuous rainfall for the study area, and the effect of solar power plants on slope stability was assessed. The findings demonstrate the feasibility of evaluating slope stability and developing a LEWS for solar power plants installed on mountainous terrain. These results provide a valuable foundation for ensuring slope stability and mitigating infrastructure damage in mountainous areas in the future.

Keywords
Continuous rainfall
Landslide
Landslide early warning system
Slope stability
Solar power plant

최근 기후 변화로 인해 강우 패턴과 강수량의 급격한 변화가 발생하면서, 산지에 설치된 태양광 발전시설의 안정성에 대한 위험이 증가하고 있다.　이에 따라, 태양광 발전시설이 설치된 지역의 안전을 확보하고 산사태 피해를 최소화하기 위해서는 신뢰성 있는 비탈면 안정성 평가와 효과적인 산사태 조기경보 시스템(Landslide Early Warning System, LEWS) 구축이 필수적이다. 본 연구에서는 기존 산사태 조기경보 시스템에 태양광 발전시설의 하중과 설계 특성을 적용하여, 이를 연구 대상 지역에 적용하였다. 이를 위해 연구 대상 지역에서 강우 자료를 수집하고, 현장 흙을 채취하여 실내 실험을 통해 물리적 및 수리적 특성을 분석하였다. 이 데이터들을 바탕으로 수치 해석 프로그램을 활용하여 해당 지역의 임계 연속 강우량(Critical Continuous Rainfall, CRcrit)을 산출하고, 태양광 발전시설이 비탈면 안정성에 미치는 영향을 평가하였다. 본 연구 결과는 산지에 설치된 태양광 발전시설의 비탈면 안정성 평가 및 산사태 조기경보 시스템의 개발 가능성을 실증하였으며, 향후 산지 인프라와 관련된 비탈면 안정성 확보 및 피해 최소화를 위한 기초 자료로 활용될 수 있을 것이다.

References
1

Baum, R. L., Coe, J. A., Godt, J. W., Harp, E. L., Reid, M. E., Savage, W. Z., ... and Michael, J. A. (2005), "Regional Landslide-hazard Assessment for Seattle", Washington, USA. Landslides, 2, 266-279.

10.1007/s10346-005-0023-y
2

Cho, S. (2015), "Stability Analysis of Unsaturated Soil Slopes Considering Rainfall Infiltration Using a Two-phase Flow Model", Journal of the Korean Society of Hazard Mitigation, Vol.15, No.6, pp.321-329.

10.9798/KOSHAM.2015.15.6.321
3

Crozier, M. J. (2010), "Deciphering the Effect of Climate Change on Landslide Activity: A Review", Geomorphology, Vol.124, No.3-4, pp.260-267.

10.1016/j.geomorph.2010.04.009
4

Kim, Y., Choi, K., Lee, S., Lee, S., and Kwon, H. (2010), "Estimation of the Unsaturated Permeability Curve of Domestic Weathered Soil based on Soil-water Characteristics", Journal of the Korean Geotechnical Society, Vol.26, No.10, pp.49-60.

5

Lee, I. M., Cho, W. S., Kim, Y. U., and Sung, S. G. (2003), "In-situ Monitoring of Matric Suctions in a Weathered Soil Slope", Journal of the Korean Geotechnical Society, Vol.19, No.1, pp.41-49.

6

Lee, J. J., Kim, J. H., and Hwang, Y. C. (2014), "Slope Stability by Variation of Rainfall Characteristic for Long Period", JOURNAL OF THE KOREAN GEOTECHNICAL SOCIETY, Vol.30, No.6, pp.51-59.

10.7843/kgs.2014.30.6.51
7

Lee, J. S., Kang, H. S., Suk, J. W., and Kim, Y. T. (2019), "Development of Hazard Level-based Rainfall Threshold for Prediction of Rainfall-induced Landslide Occurrence in Korea", Journal of the Korean Society of Hazard Mitigation, Vol.19, No.5, pp.225-236.

10.9798/KOSHAM.2019.19.5.225
8

Lee, J. S., Kim, Y. T., Song, Y. K., and Jang, D. H. (2014), "Landslide Triggering Rainfall Threshold based on Landslide Type", Journal of the Korean Geotechnical Society, Vol.30, No.12, pp.5-14.

10.7843/kgs.2014.30.12.5
9

Miller, C. L. and Laflamme, R. A. (1958), The Digital Terrain Model-: Theory & Application, MIT Photogrammetry Laboratory.

10

Mualem, Y. (1976), "A New Model for Predicting the Hydraulic Conductivity of Unsaturated Porous Media", Water Resources Research, Vol.12, No.3, pp.513-522.

10.1029/WR012i003p00513
11

Oh, J. and Park, H. J. (2014), "Analysis of Landslide Triggering Rainfall Threshold for Prediction of Landslide Occurrence", Journal of the Korean Society of Hazard Mitigation, Vol.14, No.2, pp.115-130.

10.9798/KOSHAM.2014.14.2.115
12

Oh, S., Jang, J., and Yoon, S. (2024), "Infiltration and Stability Analysis Using Double Modal Water Retention Curves for Unsaturated Slopes in Pohang", KSCE Journal of Civil and Environmental Engineering Research, Vol.44, No.5, pp.695-705.

13

Park, J. Y., Lee, S. R., Lee, D. H., Kim, Y. T., and Lee, J. S. (2019), "A Regional-scale Landslide Early Warning Methodology Applying Statistical and Physically based Approaches in Sequence", Engineering Geology, Vol.260, 105193.

10.1016/j.enggeo.2019.105193
14

Park, B., Kim, S., and Woo, Y. (2020), "Safety Evaluation of Slope by Solar Power Facility Installation", Proceedings of the Korean Society of Civil Engineers Conference, pp.1361-1364.

15

Van Genuchten, M. T. (1980), "A Closed‐form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils", Soil science society of America Journal, Vol.44, No.5, pp.892-898.

10.2136/sssaj1980.03615995004400050002x
16

Vasu, N. N., Lee, S. R., Pradhan, A. M. S., Kim, Y. T., Kang, S. H., and Lee, D. H. (2016), "A New Approach to Temporal Modelling for Landslide Hazard Assessment Using an Extreme Rainfall Induced-landslide Index", Engineering Geology, Vol.215, pp.36-49.

10.1016/j.enggeo.2016.10.006
Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 40
  • No :6
  • Pages :139-149
  • Received Date : 2024-12-10
  • Revised Date : 2024-12-18
  • Accepted Date : 2024-12-19
  • DOI :https://doi.org/10.7843/kgs.2024.40.6.139
Journal Informaiton Journal of the Korean Geotechnical Society Journal of the Korean Geotechnical Society
Archives
: Vol.23~28 (2007~2012)
  • NRF
  • KOFST
  • KISTI Current Status
  • KISTI Cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close