Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) (방사성폐기물학회지)

Korean Radioactive Waste Society (한국방사성폐기물학회)
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Estimation of Groundwater Level Fluctuation of the Crystalline site Using Time Series Analyses in South Korea

시계열분석을 이용한 결정질암 지역의 지하수위 변동 평가

  • Received : 2013.04.03
  • Accepted : 2013.08.05
  • Published : 2013.09.30
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Abstract

This study is characterized the groundwater flow pattern near crystalline site of Yangbook-Myeon, Gyeong-ju City, South Korea. From the time series analyses, groundwater level could be classified into 4 types reflecting the hydrogeological characteristics and rainfall pattern. The type I (DB1-1, DB1-2) may be directly influenced by rainfall pattern. The type II (DB1-3, DB1-7, KB-1, KB-2, KB-3, KB-7, KB-14, KB-15) may be influenced by rainfall event as well as groundwater flow through water-conducting features. The type III (DB-5, DB1-6, DB2-2, KB-10, KB-11, KB-13) may be predominantly happens in the crystaline rock mass, groundwater in this type flows through the minor fracture networks rather than direct effect of rainfall event. The type IV (DB1-8, KB-9) may be influenced by irregular variation of the groundwater level due to anisotropy and heterogeneity of crystalline rock.

본 연구는 경상북도 경주시 양북면 지역의 결정질 암반의 지하수위 모니터링 자료를 이용하여 지하수 유동 특성을 평가하였다. 시계열분석 결과, 수리 지질 특성과 강우 사건을 반영한 4가지 변동 유형으로 분류할 수 있다. 유형 1(DB1-1, DB1-2)은 지하수위가 강우 사건의 영향을 가장 크게 받고 있다. 유형 2(DB1-3, DB1-7, KB-1, KB-2, KB-3, KB-7, KB-14, KB-15)는 공간적으로 단열대 주변에 분포하여 지하수투수특성대 발달이 우수하기 때문에, 강우의 직접적인 침투와 주단열대를 통한 지하수 유동이 동시에 나타난다. 유형 3(DB-5, DB1-6, DB2-2, KB-10, KB-11, KB-13)은 주단열대와 원거리에 분포한 결정 질 암반에 위치되기 때문에 강우의 직접적인 침투 영향보다는 고지대의 함양지역에서 소규모의 단열대를 통한 지하수 유동이 우세하게 일어난다. 유형 4(DB1-8, KB-9)는 결정질암반의 다양한 불균질성에 의해 지하수위 변동이 영향을 받고 있다.

Keywords

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