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2016 Vol.49, Issue 11 Preview Page
Availability test of eco-levee construction for presevation of bangudae petroglyphs

생태제방을 이용한 반구대암각화 보존방안 연구

Seung-Oh Leea
,
Sun-Dong Chegalb
,
Hong-Je Choc*
이 승오a
,
제갈 선동b
,
조 홍제c*
aDept. of Civil Engrg., Hongik University, Korea
bH2R Co., Ltd
cDept., of Civil & Environmental Engrg., University of Ulsan
a홍익대학교 토목공학과
b㈜에이치투알
c울산대학교 공과대학 건설환경공학부
*교신저자. *Corresponding Author. 
30 November 2016. pp. 931-939
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Abstract

Bangudae Petroglopys of the national treasure No. 285 located in elevation of 53 m to 57 m have been damaged by repetition of submergence and exposure due to the Sayeon-dam of EL.60 m constructed in down stream. In this study, as a preservation plan of the petroglyphs from the contact with water, the construction of eco-levee was suggested and its effect was investigated in the views of hydraulic engineering. It was designed to be located aside of 80 m from Bangudae Petroglyphs with the length of 440 m in streamwise direction, and it was need to construct a new channel maintaining the original hydraulic capacity and conveyance. Hydraulic characteristics such as water surface elevations and velocities near Bangudae Petroglyphs were measured after the eco-levee was installed in the hydraulic model with the scale of 1:50. It showed that there were not much changes of water surface elevations and velocities between sayeon-dam spillway EL. 60 m (Suggestion 1) and EL. 54 m (Suggestion 2). It was concluded the eco-levee could be made of natural materials like soil, pebble, gravel in terms of allowable velocity and shear stresses. The slope of water surface at Suggestion 2 was steeper, and velocities near Bangudae Petroglyphs were also faster than Suggestion 1. As the vorties occured at the left side in Suggestion 2, more detailed study is required.

Keywords
Bangudae petroglyphs
Eco-Levee
Hydraulic characteristics
Hydraulic model experiment

국보 285호인 반구대 암각화는 EL.53∼57 m에 위치해 있으며, 하류에 설치된 사연댐의 만수위 EL.60 m로 인해 매년 5∼6개월 동안 침수와 노출이 반복되어 훼손이 심화되고 있다. 본 연구에서는 물과의 접촉을 차단시켜 암각화를 보존하는 방안으로서, 암각화 전면에서 약 80 m 떨어진 곳에 약 440 m의 차수형 제방을 설치하고 기존 하폭에 준하는 수로를 개설하는 생태제방안을 제안하였다. 이 안의 타당성을 검토하기 위해 저수지와 하천의 흐름특성을 고려할 수 있는 수리모형을 1:50축척으로 제작하여, 수로변경에 따른 신설 제방구간과 상·하류 대곡천의 수리학적 변화를 분석하였다. 연구결과, 사연댐 여수로를 EL. 60 m와 EL. 54 m로 고려한 생태제방 1안과 2안 모두 신설되는 수로에서 유속과 수심변화 등이 크지 않았으며, 허용유속과 소류력 기준으로 판단하면 흙과 돌 등 자연재료로 생태제방 조성이 가능할 것으로 판단된다. 수면경사가 크게 되는 2안이 1안보다 수로 내에서의 유속이 더 빠른 것으로 나타났고, 특히 2안은 유입부 좌안에서 와류가 발생하므로 이에 대한 대책이 필요한 것으로 보인다.

키워드
반구대암각화
생태제방
수리학적 특성
수리모형실험
References
1
Bangudae Petroglyph Institute, University of Ulsan (2011). Report of confirmation of phenomenon for National Treasure No. 285 Bangudae-Petroglyph in Daegok-ri, Ulsan. pp. 1-38.
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Bangudae Petroglyph Institute, University of Ulsan (2014). Conser-vation and Management of the Worlds Petroglyph Sites
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Chegal, S. D., Cho, H. J., Kang, H. S., and Lee, S. O. (2014). “An experimrntal study on hydraulic characteristics at bangudae petroglyphs by changing management water level of Sa-Yeon Dam.” Korean Society of Hazard Mitigation, Vol. 14, No. 2, pp. 277-287.
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Cho, H. J., and Moon, J. K. (2010). “An engineering survey and proposal on presevation of petrograms at daegok brook.” Tunnel & Underground Space, Journal of Korean Society for Rock Mechanics, Vol. 20, No. 3, pp. 194-206.
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 49
  • No :11
  • Pages :931-939
  • Received Date : 2016-06-22
  • Revised Date : 2016-09-08
  • Accepted Date : 2016-09-27
  • DOI :https://doi.org/10.3741/JKWRA.2016.49.11.931
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