长江科学院院报2024，Vol.41Issue(1)：83-89,7.DOI:10.11988/ckyyb.20221207
基于复合模型沙的大比尺尾矿库漫顶溃决模型试验
Modelling of Overtopping Break of Large Scale Tailings Pond Using Composite Model Sand
摘要
Abstract
To better predict the impacts of tailings pond breaches and quantitatively understand the breach process and downstream effects,we prepared a composite model sand by mixing fine-grained tailing sand and expanded per-lite in a 1.5:1 volume ratio.Indoor tests and measurements of underwater angle of repose confirmed the feasibility of the composite model sand under similar conditions.Based on this,we conducted large-scale overtopping dam failure tests under extreme conditions to analyze the changes in dam breach process,flow process,section morphol-ogy evolution,phreatic line,inundation elevation and range.The physical model test lasted 140 minutes,during which the composite model sand discharge accounted for 10.76％of the total storage capacity,and downstream silt-ation accounted for 95.21％of this discharge.These results are consistent with the real-world situation of overtop-ping failure,demonstrating the reasonability and effectiveness of the composite model sand for more realistically simulating tailings pond breach processes.These findings also offer new insights for selecting model sand in future o-vertopping failure tests for tailings pond.关键词
复合模型沙/尾矿库/漫顶溃坝/模型试验/浸润线Key words
composite model sand/tailings pond/overtopping dam failure/model test/phreatic line分类
水利科学引用本文复制引用
易富,陶晗,杜常博,戚旭鹏,翟巍昆,徐展..基于复合模型沙的大比尺尾矿库漫顶溃决模型试验[J].长江科学院院报,2024,41(1):83-89,7.基金项目
辽宁省教育厅青年基金项目(LJKQZ2021153) （LJKQZ2021153）
辽宁工程技术大学学科创新团队项目(LNTU20TD-12) （LNTU20TD-12）
