中国地质灾害与防治学报2023，Vol.34Issue(6)：37-46,10.DOI:10.16031/j.cnki.issn.1003-8035.202305019
泥石流拦挡坝工程服役性能特征分析
Analysis of service performance characteristics of debris flow check dams:A case study in Wudu District,Longnan City,Gansu Province
摘要
Abstract
Check dams play a pivotal role in debris flow prevention and control engineering.However,their disaster prevention and mitigation capacity gradually decrease over service time due to repeated debris flow impacts.The study was carried out in 15 ditches and 55 check dams within Wudu District,Longnan City,Gansu Province.Seven key evaluation factors were selected for effectiveness and safety:reservoir siltation ratio,slope stability,drainage hole blockage,dam body damage,dam foundation damage,dam shoulder damage,and safety.The evaluation model of the serviceability of the indivusual dam and the comprehensive serviceability of the single trench of the barrage was established by using hierarchical analysis and fuzzy comprehensive evaluation method,and the serviceability was divided into four grades:excellent,good,medium and poor.The evaluation results show that the serviceability rating of individual dams is predominately"poor",accounting for 34.5％.Similarly,the collective serviceability rating of single trench dams for debris flow is predominately"poor",at 33.3％.The results of the evaluation are consistent with the fieldwork observations,providing a valuable reference for predicting the service performance and service life of barrage dams.关键词
拦挡坝/服役性评价/模糊综合评价法/泥石流/武都区Key words
check dam/serviceability evaluation/fuzzy comprehensive evaluation method/debris flow/Wudu District分类
天文与地球科学引用本文复制引用
周亮,何晓英,晋云超,张展,向灵芝,沈娜..泥石流拦挡坝工程服役性能特征分析[J].中国地质灾害与防治学报,2023,34(6):37-46,10.基金项目
第二次青藏高原综合科学考察研究项目(2019QZKK0902) （2019QZKK0902）
国家内河航道整治工程技术研究中心暨水利水运工程教育部重点实验室开放基金项目(SLK2021B05) （SLK2021B05）
国家自然科学基金区域创新发展联合基金项目(U22A20600) （U22A20600）
