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Analysis of Appropriateness of Estimation Methods for Sediment Yields in Damaged Areas by Debris Flow

토석류 피해지역 토사유출량 산정 방법의 적정성 분석

Gi Jung Kim1
Kye Won Jun2*
Bae Dong Kang3
김 기중1
전 계원2*
강 배동3
1Master, Graduate School of Disaster Prevention, Kangwon National University
2Professor, Graduate School of Disaster Prevention, Kangwon National University
3Ph.D Course, Graduate School of Disaster Prevention, Kangwon National University
1강원대학교 방재전문대학원 석사
2강원대학교 방재전문대학원 교수
3강원대학교 방재전문대학원 박사과정
*Corresponding Author
31 March 2022. pp. 35-46
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Abstract

본 연구에서는 토석류 피해 발생지역에 대해 토사유출량 산정에 많이 사용되고 있는 RUSLE와 NILIM 그리고 Marchi의 경험식을 통해 토사유출량을 산정하였으며, 토사유출량 산정 방법의 국내 적용성을 검토하기 위해 정밀측량 및 현장조사를 통해 측정된 토사유출량을 비교하였다. RUSLE 방법은 실측 토사유출량에 비해 평균 2.13배 과다 산정되었으며, Marchi의 경험식은 평균 2.83배, NILIM 경험식의 경우 평균 1.26배로 세 가지 경험식 중 가장 낮은 오차가 발생하였다.

키워드
토석류
토사유출량
RUSLE
NILIM
Marchi
경험식

In this study, the amount of debris flow was calculated through the empirical equations of RUSLE, NILIM, and Marchi, which are widely used to calculate areas affected by debris flow, and debris flow measured through precise measurements and field surveys was compared. The RUSLE method over estimated by 2.13 times in the average sense compared with the measured sediment quantify and Marchi's empirical equation over estimated by 2.83 times while NILIM's empirical equation 1.26 times, which is the lowest error among the three empirical equation.

Keywords
Debris flow
Sediment yield
RUSLE
NILIM
Marchi
Empirical equation
References
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Korean References Translated from the English

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최영남 (2019). 현장실측에 의한 토석류 규모 산정과 GIS 기반의 수치적 거동 분석. 강원대학교 박사학위논문.
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Information
  • Publisher :Korean Society of Disaster and Security
  • Publisher(Ko) :한국방재안전학회
  • Journal Title :Journal of Korean Society of Disaster and Security
  • Journal Title(Ko) :한국방재안전학회 논문집
  • Volume : 15
  • No :1
  • Pages :35-46
  • Received Date :2022. 03. 20
  • Revised Date :2022. 03. 22
  • Accepted Date : 2022. 03. 25
  • DOI :https://doi.org/10.21729/ksds.2022.15.1.35
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