人民长江2025，Vol.56Issue(3)：48-54,7.DOI:10.16232/j.cnki.1001-4179.2025.03.007
透过型泥石流拦砂坝库内自清淤作用及效果评估
Effect and evaluation of self-cleaning function in reservoirs of debris flow open check dams
摘要
Abstract
Self-cleaning is a significant characteristic of debris flow open check dams,and this complex process is influenced by a number of factors,including the accumulation of debris flow in the reservoir,the opening of the dam and the intensity of rain-fall.A total of 154 open check dams in Sichuan Province were selected to analyze the self-cleaning performance characteristics and effects based on a combination of site inspection and drone aerial survey.The results demonstrated that the number of beam dams,slit dams and slot dams in the study area was 22,30 and 102,respectively.Additionally,the proportion of dams in the low occlusion rate was the largest,at approximately 41.6％.Self-cleaning can slow down the longitudinal slope and result in forma-tion of a coarse surface of debris flow accumulation and the emergence of erosion grooves.A matrix of five levels:none,slight,me-dium,strong,and very strong,was constructed to evaluate the effects of self-cleaning in the reservoir,corresponding to 21,44,61,26 and 2 dams.The key factors affecting the self-cleaning effect were the longitudinal slope of siltation,rainfall intensity and relative opening,which were significantly positively correlated with the self-cleaning effect.关键词
泥石流/透过型拦砂坝/自清淤/效果评估/现场调查/无人机航测/四川省Key words
debris flow/open check dam/self-cleaning/effect evaluation/site inspection/drone aerial survey/Sichuan Province分类
地质学引用本文复制引用
黄迪文,游勇,孙昊..透过型泥石流拦砂坝库内自清淤作用及效果评估[J].人民长江,2025,56(3):48-54,7.基金项目
四川省博士后特别资助项目(TB2023028) （TB2023028）
国家自然科学基金青年科学基金项目(42201095) （42201095）
