• Title/Summary/Keyword: Agrarian Basin

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Derivation Method of Rating Curve and Relationships for Flow Discharge-Total Sediment at Small-Midium Streams in Agrarian Basin (농경유역 중소하천에서 유량과 총유사량의 관계식 유도방법)

  • Lee, Jong-Seok;Kim, Chi-Gon;You, Eui-Geen
    • The Journal of the Korea Contents Association
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    • v.15 no.8
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    • pp.544-555
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    • 2015
  • This study aims to derivate of the relationship and rating curve for the flow discharge-total sediment using the measured field data from the main points of small-medium stream reaches in agrarian basin. The total sediment of measured data are obtained by bed load added to suspended load which analyzed using the particle size distribution curve of sieve test and the dry or the filtration method from the collected samples by samplers (DH-48, D-74 and BLH-84, BL-84) at the stream bed and the depth-averaged concentration, respectively. These field data had been collected from August 2012 to September 2014 at the seven measuring stations of the national-local channel reaches of the four study streams in the Nonsan river systems of agrarian basin. As a result, the relationships and the rating curve for the flow discharge-total sediment are derived as a function pattern of power law by analyzing on a distribution characteristic of the database set and it will be used as a useful tool to analyze erosion, deposition, and transportation in theoretical research as well as in practical application of the hydraulic sedimentation engineering.

Derivation of Relationships for Flow-Total Load at Midium and Small Streams in Agrarian Basin (농경유역 중소하천의 유량-총유사량 관계식 유도)

  • Lee, jong-seok;Kim, chi-gon;You, eui-geun;Lee, hyo-won
    • Proceedings of the Korea Contents Association Conference
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    • 2015.05a
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    • pp.369-370
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    • 2015
  • 본 연구는 농경유역 중소하천에서 실측된 유량과 총유사량의 분포특성을 분석하고 이들 간의 관계식을 도출하고자 한다. 유량과 유사량 자료 측정에는 프로펠러 유속계, 전자파 표면유속계와 DH-48, D-74 부유사 채취기 및 BL-84, BLH-84 소류사 채취기를 각각 사용하였다. 4개 하천을 대상으로 국가 지방하천 수로구간의 7개 측점을 선정하고, 2012년 8월부터 2014년 9월까지 유량과 부유사 및 소류사를 각각 측정하였다. 측정결과는 수리특성의 분포분석과 유량-총유사량 간의 관계식을 멱함수 형으로 유도하였으며, 이들 관계식은 수공실무에 유용한 도구로 사용할 수 있을 것이다.

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