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2019 Vol.18, Issue 4 Preview Page

Research Article

An Experimental Study on Overflow and Internal Erosion Protection Technology of a Reservoir

저수지 제체월류 및 내부침식 보호기술 모형실험 연구

Ji-Huan Jin1
,
Tae-Ho Lee2
,
Jeon-Yong Yoo3
,
Eun-Sang Im4
,
Seung-Joo Lee5
,
Yong-Seong Kim6*
김 기환1
,
이 태호2
,
유 전용3
,
임 은상4
,
이 승주5
,
김 용성6*
1Member, Combined Master’s and Doctoral Program Students, Department of Regional Infrastructure Engineering, Kangwon National University, Kangwondaehak-gil 1 Chuncheon-si, Gangwon-do 24341, Republic of Korea
2Senior Researcher, Rural Research Institute, Korea Rural Community Corporation, 870 Haean-ro, Sangnok-gu, Ansan-si, Gyeonggi-do 15634, Republic of Korea
3Director General, Rural Research Institute, Korea Rural Community Corporation, 870 Haean-ro, Sangnok-gu, Ansan-si, Gyeonggi-do 15634, Republic of Korea
4Senior Researcher, KIWE, K-water, 200beon-gil, Sintanjin-ro, Daedeok-gu, Deajeon 34350, Republic of Korea
5Member, Combined Master’s and Doctoral Program Student, Department of Regional Infrastructure Engineering, Kangwon National University, Kangwondaehak-gil 1 Chuncheon-si, Gangwon-do 24341, Republic of Korea
6Member, Professor, Department of Regional Infrastructure Engineering, Kangwon National University, Kangwondaehak-gil 1 Chuncheon-si, Gangwon-do 24341, Republic of Korea
* Corresponding Author
30 December 2019. pp. 181-191
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Abstract

국내 저수지는 대부분 필댐으로 구성되고 있고, 필댐의 붕괴는 월류와 파이핑이 주된 원인으로 분석되고 있다. 본 연구에서는 원심모형실험기를 이용하여 실제 운영 중인 공주시 OO저수지 축조 모형에 대하여 수위승강 시 및 월류 시 저수지의 거동 특성을 고찰하였다. 실제 저수지의 침투 및 월류 모사를 위해서 1/50로 축소한 모형에 파손 및 보강된 복통을 설치하고 제정 보강 및 미보강의 조건을 부여한 후 LVDT, 간극수압계를 설치하고 수위승강시험 및 월류시험을 수행하여 보강방법에 따른 제체의 거동 특성을 검토하였다. 원심모형실험 결과, 수위승강 시험에서 파손된 복통이 제체의 안정에 영향을 미칠 수 있는 것으로 나타났고 반전공법과 보강공법을 병행한 경우 제체의 침투 안정성을 확보할 수 있는 것으로 나타났다. 또한, 월류시험에서 월류 유도 수로 설치 시 제체의 세굴과 토사의 유출을 방지할 수 있다는 것을 확인하였다. 본 연구를 통해 저수지 월류 유도 수로 및 복통 보강공법 적용에 필요한 기초자료를 제공할 수 있을 것으로 판단된다.

Most of the reservoirs in South Korea are fill dam, and overflow and piping phenomena have been detected as the main causes of failure of fill dam. In this study, an operating OO reservoir located in Gongju-si is modeled in centrifuge model test to study the behavior of reservoir during water level rise and overflow conditions. In order to simulate seepage and overflow in the real reservoir, the model was constructed in 1/50 scale, and deteriorated and reinforced conduits were installed. After modeling the reinforced and deteriorated conditions of the conduits, LVDTs, pore pressure gauges were installed and centrifuge model tests were carried out with water level rise and overflow conditions in order to analyze the reservoir behavior according to the reinforcement methods. The results of centrifuge model test in water level rise condition show that deteriorated conduit has adverse effects in the stability of the reservoir body, and the conduit which is reinforced by the inverse lining method has enhanced stability of the reservoir body. Moreover, installation of water spillway is seen to prevent the scour and erosion of the reservoir body. The study provides a basic data required for the reinforcement of conduit and water spillway in the reservoir.

Keywords
Centrifuge model test
Reservoir
Water level
Overflow
Conduit

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 18
  • No :4
  • Pages :181-191
  • Received Date : 2019-11-26
  • Revised Date : 2019-12-07
  • Accepted Date : 2019-12-10
  • DOI :https://doi.org/10.12814/jkgss.2019.18.4.181
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