Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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A Basic Study on the Piping Stability Monitoring Method of Weir Structure

보 구조물의 파이핑 안정성 모니터링 방안 기초 연구

  • Ha, Ik-Soo (Dept. of Civil Engrg., Kyungnam Univ.)
  • 하익수 (경남대학교 재난안전건설학과)
  • Received : 2023.09.07
  • Accepted : 2023.09.10
  • Published : 2023.09.30
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Abstract

The study aims to select an indicator that can monitor the piping stability of the foundation of a weir structure and suggest a piping stability monitoring method using the selected indicator. Based on the results from previous studies and the results of numerical seepage analysis, the change in pore water pressure in the foundation ground of the weir was selected as an indicator for piping monitoring. Considering the state in which the pore water pressure gauges are installed in operating weirs, seepage analyses were performed according to various upstream water level conditions for each case where one or two gauges were installed at the bottom of the weir. A piping monitoring method was presented based on the analysis results for each of these cases. In addition, the proposed monitoring method was shown to be effective by providing an example of a trial application to an operating weir.

본 연구의 목적은 보 구조물 기초지반의 파이핑 안정성을 모니터링할 수 있는 지표를 선정하고, 선정 지표를 활용한 파이핑 안정성 모니터링 방법을 제시하는 데에 있다. 기존 연구 결과에 대한 검토와 침투모사 수치해석 결과로부터 보 기초지반에서의 간극수압 변화를 파이핑 모니터링 지표로 선정하였다. 운영 중인 보에서 간극수압계의 설치 상황을 감안하여, 간극수압계가 보 기초 하부에 1개 또는 2개 설치된 경우 각각에 대해, 다양한 상류 저수위 조건에 따른 침투해석을 수행하였다. 침투해석 결과로부터 파이핑 모니터링 방안을 이러한 각각의 경우에 대하여 제안하였다. 아울러, 제안된 모니터링 방안을 운영 중인 보에 시범 적용하였고 이를 통해 그 실효성을 확인하였다.

Keywords

Acknowledgement

이 연구 결과물은 2023학년도 경남대학교 학술진흥연구비 지원에 의한 것임.

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