A Study on Numerical Analysis for Debris Flow considering the Application of Debris Flow Mitigation Facilities

Bae Dong Kang; Jung Soo An; Kye Won Jun; Chang Deok Jang

doi:10.21729/ksds.2023.16.4.33

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2023 Vol.16, Issue 4 Preview Page Next Page

Original Article

A Study on Numerical Analysis for Debris Flow considering the Application of Debris Flow Mitigation Facilities 토석류 저감시설 적용에 따른 토석류 수치해석에 관한 연구

31 December 2023. pp. 33-43

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Abstract

The impact of prolonged rainfall, such as during the monsoon season or intense concentrated rainfall over a short period, can lead to mountainous disasters such as landslides and debris flows. These events, such as landslides and debris flows, cause both human and material damage, prompting the implementation of various measures and research to prevent them. In the context of researching debris flow disasters, numerical models for debris flows provide a relatively simple way to analyze the risk in a study area. However, since empirical equations are applied in these models, yielding different results and variations in input variables across models, the validation of numerical models becomes essential. In this study, a numerical model for debris flows was employed to compare and analyze the mitigation effects of facilities such as check dams and water channel work, aiming to reduce the damage caused by debris flows.

Keywords

Debirs flow

Numerical model

Check dam

Water channel work

Reduction effect

장마와 같이 장기간에 내리는 강우나 단기간에 많은 양의 강우가 내리는 집중호우의 영향으로 산사태, 토석류와 같은 산지재해가 발생한다. 산사태와 토석류는 인적, 물적 피해를 야기하므로 이를 예방하기 위한 다양한 대책의 적용과 연구가 수행되고 있다. 토석류 재해 연구 중 토석류 수치모형은 비교적 간단하게 연구지역에 대한 위험도를 분석할 수 있다. 다만 경험에 의한 방정식이 적용되어 모형마다 다른 결과를 나타내고 입력변수도 모델마다 차이가 있어 수치모형의 검증은 필수적이다. 본 연구에서는 토석류 수치모형을 이용하여 토석류의 피해를 저감하기 위한 시설인 사방댐과 종단구조물인 계간수로를 반영하여 이에 따른 저감효과를 비교 ‧ 분석하였다.

키워드

토석류

수치모형

사방댐

계간수로

저감효과

References

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Kim, Nam Gyun. (2011). A Study on Transport and Diffusion of Debris Flow with FLO-2D. M.S. Dissertation. Kangwon National University. 1-58.

Kim, Young Hwan. (2017). Sediment Discharge Analysis according to Location Change of Check Dam Using Debris Flow Numerical Model. M.S. Dissertation. Kangwon National University. 1-62.

Lim, Young Hyup. (2017). A Study on the Application of Numerical Simulation to Erosion Control Facility Using KANAKO 2D. Ph.D. Dissertation. Kangwon National University. 1-85.

Nakatani, K., E. Iwanami, S. Horiuchi, Y. Satofuka, and T. Mizuyama. (2012). Development of "Hyper KANAKO", a Debris Flow Simulation System Based on Laser Profiler Data. Proceedings of the 12th Congress INTERPRAEVENT. 269-280.

Nakatani, K., T. Wada, Y. Satofuka, and T. Mizuyama. (2008). Development of "Kanako 2D (Ver.2.00)," a User-Friendly One- and Two-Dimensional Debris Flow Simulator Equipped with a Graphical User Interface. International Journal of Erosion Control Engineering. 1(2): 62-72. 10.13101/ijece.1.62

National Institute for Land and Infrastructure Management. (2016). Manual of Technical Standard for Establishing Sabo Master Plan for Debris Flow and Driftwood. Technical Note of National Institute for Land Infrastructure Management. No. 364. Tsukuba: NILIM.

Takahashi, T. (2001). Process of Occurrence, Flow and Deposition of Viscous Debris Flow. River, Coastal and Estuarine Morphodynamics. Springer, Berlin, Heidelberg. 93-118. 10.1007/978-3-662-04571-8_5

Takahashi, T. (2007). Progress in Debris Flow Modeling. Progress in Landslide Science. Springer, Berlin, Heidelberg. 59-77. 10.1007/978-3-540-70965-7_5

Korean References Translated from the English

김남균 (2011). FLO-2D를 이용한 토석류의 이동과 확산에 관한 연구. 석사학위논문. 강원대학교. 1-58.

김영환 (2017). 토석류 수치모형을 이용한 사방댐 위치 변화에 따른 토사유출해석. 석사학위논문. 강원대학교. 1-62.

임영협 (2017). KANAKO 2D를 이용한 토석류 수치모의 및 사방시설에의 적용 방안 연구. 박사학위논문. 강원대학교. 1-85.

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 : 16
No :4
Pages :33-43
Received Date : 2023-12-13
Revised Date : 2023-12-28
Accepted Date : 2023-12-28
DOI :https://doi.org/10.21729/ksds.2023.16.4.33

Journal of Korean Society of Disaster and Security 한국방재안전학회 논문집 ISSN:2466-1147(Print) 2508-285X(Online)

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Korean References Translated from the English