Work

Development and Application of an Automated Check-Dam Scenario Analysis Program for Debris-Flow Hazards

Year: 2026

Type: article

Abstract: Debris-flow hazards in mountainous watersheds are increasing due to more frequent and intense rainfall, and check dams are widely used to reduce these risks. However, mitigation performance varies depending on installation location and design conditions, necessitating a quantitative comparison of multiple alternatives. In this study, an automated scenario-analysis program was developed that integrates topographic data with a debris-flow numerical model to generate candidate check dam sites, construct installation scenarios, and evaluate mitigation effects. The program was applied to a 2019 debris-flow event in Gibuk-myeon, Pohang, South Korea. The results showed that mitigation effects varied substantially by dam location and height, and that the proposed framework can efficiently compare multiple alternatives, supporting practical check dam planning and design.

Source: Korean Society of Hazard Mitigation

DOI: 10.9798/kosham.2026.26.3.33

Authors: Seungjun Lee, Heemin Ko, Hyunuk An, Sueng-Won Jeong, Hyun-Joo Oh

Institutions: Korea Institute of Geoscience and Mineral Resources, Chungnam National University

Language: English

Topic: Landslides and related hazards

Subfield: Management, Monitoring, Policy and Law

Field: Environmental Science

Domain: Physical Sciences

SDGs: Sustainable cities and communities, Clean water and sanitation, Industry, innovation and infrastructure

Open Access status: diamond

Funders: Korea Institute of Geoscience and Mineral Resources, Ministry of the Interior and Safety