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2023 Vol.33, Issue 3 Preview Page

Research Article

Geochemical Characteristics of Baengnyongdonggul Cave Water, Pyeongchang, Gangwon State

강원특별자치도 평창 백룡동굴 동굴수의 지구화학적 특성

Youngyun Park1
,
Lyoun Kim2*
,
Jonghee Lee3
,
Mun Bok Choi4
박 영윤1
,
김 련2*
,
이 종희3
,
최 문복4
1Director, Research Institute of Korea Green Earth Environment
2Senior Researcher, Cave Research Institute of Korea
3Vice Director, Cave Research Institute of Korea
4Manager, Cave Research Institute of Korea
1(사)한국녹색지구환경연구소 연구소장
2(사)한국동굴연구소 책임연구원
3(사)한국동굴연구소 부소장
4(사)한국동굴연구소 실장
*Corresponding Author
30 September 2023. pp. 413-426
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Abstract

This study presents the geochemical characteristics of cave water to evaluate its origin and flow path. From June 2022 to may 2023, river water was collected at two sites (WE1 and WE2) in the Donggang River around Baengnyongdonggul Cave, and cave water was collected at four sites (WE3 to WE6) inside Baengnyongdonggul Cave. Water samples were analyzed for major dissolved components. Both river and cave waters were classified as Ca-HCO3 type. All cave water samples were supersaturated in carbonate minerals, suggesting that carbonate minerals would precipitate within the cave. Due to differences in the source of cave water and the degree of water-rock interaction, the geochemical characteristics of water from sites where the flow of cave water is observed (WE3 and WE6) and rimstone pools (WE4 and WE5) could be clearly distinguished. The cave water at WE6 flows in from the Donggang River, then passes through WE3 and flows back out into the Donggang River. The cave water at WE4 and WE5 is supplied from precipitation, but the flow path of cave water at WE4 and WE5 is different.

Keywords
Baengnyongdonggul cave
cave water
river water
chemical composition
saturation index

이 연구는 백룡동굴 내 동굴수의 지구화학 특성을 평가하고 이를 이용하여 동굴수의 기원 및 유동특성을 평가하기 위해서 수행하였다. 2022년 6월부터 2023년 5월까지 백룡동굴 주변 동강에서 2개 지점(WE1과 WE2)과 내부 4개 지점(WE3~WE6)에서 하천수와 동굴수를 각각 채취하여 주요 용존성분을 분석하였다. 하천수와 동굴수는 모두 Ca-HCO3형으로 구분되었다. 모든 동굴수에서 탄산염 광물이 과포화 상태이므로 동굴 내부에서 탄산염 광물이 침전될 것으로 예측되었다. 동굴수는 기원지와 물-암석 반응 정도의 차이로 인해 흐름이 있는 지점(WE3과 WE6)과 휴석소(WE4와 WE5)의 지구화학 특성이 뚜렷이 구분되었다. WE6은 동강으로부터 유입되었고 WE3을 통과하여 동강으로 유출된다. WE4와 WE5는 강수로부터 공급되지만 서로 다른 경로를 통해 동굴로 유입된다.

키워드
백룡동굴
동굴수
하천수
화학조성
포화지수
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Information
  • Publisher :Korean Society of Engineering Geology
  • Publisher(Ko) :대한지질공학회
  • Journal Title :The Journal of Engineering Geology
  • Journal Title(Ko) :지질공학
  • Volume : 33
  • No :3
  • Pages :413-426
  • Received Date : 2023-09-04
  • Revised Date : 2023-09-09
  • Accepted Date : 2023-09-11
  • DOI :https://doi.org/10.9720/kseg.2023.3.413
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