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NTIS 바로가기Journal of Korea Water Resources Association = 한국수자원학회논문집, v.52 no.10, 2019년, pp.657 - 669
To estimate accurate design quantiles considering statistical characteristics of hydrological data is one of the most important procedures in the design of hydraulic structures. While at-site frequency analysis estimates design quantile using observed data at a site of interest, regional frequency a...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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수공구조물의 설계빈도은 어떤 기법인가? | 일반적으로 수공구조물의 설계빈도는 100년 또는 200년 이상의 긴 재현기간을 가지므로 해당 재현기간에 대해 정확한 확률수문량을 산정하기 위해서는 대상 지점에 충분한 기간의 관측자료가 확보되어야 한다. 주어진 지점의 자료가 신뢰할 만한 확률수문량을 구하기에 충분한 자료기간을 가지고 있는 경우 지점빈도해석이 대상 지점의 관측자료를 가장 잘 반영할 수 있는 적합한 기법이라고 할 수 있다. 그러나 이에 대한 명확한 기준이 없고 대부분의 대상 지점은 수공구조물의 설계빈도 보다 짧은 기간의 수문관측자료를 보유하고 있으며 수문관측 자료가 없는 미계측 지점인 경우도 있다. | |
수문자료의 빈도해석은 무엇인가? | 수문자료의 빈도해석은 관측된 자료에 대한 기본적인 통계량(평균, 분산, 변동계수, 표준편차, 왜곡도, 첨예도)에 적합한 확률분포형을 선정하고 이를 이용하여 수공구조물의 설계 및 분석에 필요한 확률수문량(설계수문량)을 산정하거나 이에 대응하는 설계빈도 또는 재현기간을 구하는 절차이다. 수공구조물의 설계빈도는 그 종류에 따라 상이하나 그 규모와 중요도에 따라 파괴 시에 막대한 인적·물적 피해를 초래할 수 있으므로 해당 설계빈도에 대해 수문자료의 통계적 특성을 고려한 정확한 확률수문량을 산정하는 것은 매우 중요하다고 할 수 있다. | |
수공구조물의 설계 시 중요한 절차는 무엇인가? | 수공구조물의 설계 시 빈도해석을 통해 수문자료의 통계적 특성을 고려하여 설계빈도에 대한 정확한 확률수문량을 산정하는 것은 매우 중요한 절차이다. 지역빈도해석은 대상 지점의 자료만을 이용하여 확률수문량을 산정하는 지점빈도해석과 달리 수문학적으로 동질한 것으로 판단되는 주변지점들의 자료를 모두 포함하여 빈도해석을 수행하므로 미계측 지점 또는 자료 보유년수가 짧은 지점에서 보다 정확한 확률수문량 산정이 가능하다. |
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