Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
권호 표지
DOI QR코드

DOI QR Code

Slope Failure Prediction through the Analysis of Surface Ground Deformation on Field Model Experiment

현장모형실험 기반 표층거동분석을 통한 사면붕괴 예측

  • Park, Sung-Yong (National Disaster Management Research Institute) ;
  • Min, Yeon-Sik (Korea Land & Housing Corporation) ;
  • Kang, Min-seo (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Jung, Hee-Don (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Sami, Ghazali-Flimban (Department of Biological Environment, Kangwon National University) ;
  • Kim, Yong-Seong (Department of Regional Infrastructure Engineering, Kangwon National University)
  • Received : 2017.08.09
  • Accepted : 2017.09.05
  • Published : 2017.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, one of the natural disasters, landslide is causing huge damage to people and properties. In order to minimize the damage caused by continuous landslide, a scientific management system is needed for technologies related to measurement and monitoring system. This study aims to establish a management system for landslide damage by prediction of slope failure. Ground behavior was predicted by surface ground deformation in case of slope failure, and the change in ground displacement was observed as slope surface. As a result, during the slope failure, the ground deformation has the collapse section, the after collapse precursor section, the acceleration section and the burst acceleration section. In all cases, increase in displacement with time was observed as a slope failure, and it is very important event of measurement and maintenance of risky slope. In the future, it can be used as basic data of slope management standard through continuous research. And it can contribute to reduction of landslide damage and activation of measurement industry.

최근 발생하고 있는 자연재해 중 산사태와 관련된 재해는 막대한 인명과 재산피해를 발생시키고 있다. 지속적으로 발생하고 있는 산사태로 인한 피해를 최소화하기 위해서는 계측, 모니터링 시스템 등 관련 기술에 대한 과학적 관리체계가 필요하다. 본 연구는 사면붕괴 예측을 통한 산사태 피해저감을 위한 관리체계 확립을 목적으로 하고 있다. 이를 위해 산사태 발생시 지반거동을 예측하기 위한 표층지반변형률 봉을 제작하고, 사면 붕괴전조로서 변형률 증가를 관측하였다. 그 결과, 사면 붕괴시 지반의 변형은 붕괴 전조 구간, 변형 가속 구간, 변형 급가속 구간을 거친 후 붕괴에 이르는 것으로 나타나, 붕괴 전조 예측과 상관관계가 있는 것으로 판단된다. 모든 조건에서 사면붕괴 전조로서 시간에 따른 변위량의 증가가 공통적으로 관측되었으며, 이는 붕괴위험 사면의 계측 및 유지관리 관점에서 대단히 중요한 현상으로 판단된다. 산사태 발생에 따른 지반변위는 향후 지속적 연구를 통해 사면붕괴예측 및 계측관리기준의 기초자료로 활용될 수 있을 것으로 사료되며, 산사태 피해저감 및 계측산업 활성화에 기여할 수 있을 것으로 판단된다.

Keywords

References

  1. Chae, B. G., Song, Y. S., Choi, J. H. and Kim, K. S. (2015), The Current Methods of Landslide Monitoring Using Observation Sensors for Geologic Property, Journal of Sensor Science and Technology, Vol.24, No.5, pp.291-298 (in Korean). https://doi.org/10.5369/JSST.2015.24.5.291
  2. Kim, Y. S. (2015), Development of slope failure forecasting and warning system, Research Institute Report (in Korean).
  3. Korea Forest Service (2013), A Study on integrated management for hazards of landslide (in Korean).
  4. Korea Institute of Geoscience and Minreal Resources (2014), Development of an integrated early detection system of landslides based on a real-time monitoring, Research Institute Report (in Korean).
  5. Korea Institute of Geoscience and Minreal Resources (2015), Technology Development of Landslide Rapid Detection based on a Real-time Monitoring, Research Institute Report (in Korean).
  6. Lee, C. W., Park, S. Y and Kim, Y. S. (2014), Development of Horizontal Displacement Sensor for Rainfall-simulated Centrifugal Model Test, Journal of the Korean Geo-Environmental Society, Vol.15, No.12, pp.71-77 (in Korean). https://doi.org/10.14481/jkges.2014.15.12.71
  7. Ministry of Public Safety and Security (2015), The R&D research on Construction of Monitoring Management System for Evacuating Inhabitant in Steep Slope Site Development of Monitoring Specification (in Korean).
  8. Min, Y. S. (2016), A Study on slope failure prediction through the measurement of surface ground deformation, Ph.D. dissertation, Kangwon National University, Korea (in Korean).
  9. Tamate, S., Hori, T., Mikuni, C., Itoh, K., Kikkawa, N. and Suemasa, N. (2013), A Large Scale Model Test on Detection of Potential Risk of Slope Failure by Monitoring of Shear Strain in Shallow Section, Journal of Japan Society of Civil Engineers, Vol.69, No.3, pp.326-336.