Influence of particle size on overtopping dam break of tailings dam

中国安全科学学报 Pub Date : 2020-04-28 DOI:10.16265/J.CNKI.ISSN1003-3033.2020.04.025

WU Ligong, Xiao Lixing, L. Xiaofeng, Yao Chi, Jiang Qinghui, Zhou Chuangbing

引用次数: 1

Abstract

In order to explore overtopping break reactions of dam constructed by tailings of different particle sizesꎬ with tailings of Yancang tailings pond in Yongping Copper Mine used as dam materialꎬ physical dam ̄ break test was carried out with medium sandꎬ fine sand and silt. Thenꎬ numerical simulation was conducted for verification by using FLOW software. The results show that when middle sand is usedꎬ dam collapse is mainly represented by surface scouring and displacement failure while being represented majorly by downward erosive when silt is usedꎬ and is both of them in the case of fine sand. The physical test and numerical simulation achieve good consistency in terms of dam break flow and timeꎬ etc.ꎬ which indicates reliability of the method combining both test and numerical calculation in simulating tailings dam break.

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粒径对尾矿坝溢流溃坝的影响

为探讨不同粒径尾矿筑坝ꎬ的过顶破坝反应，以永平铜矿盐仓尾矿库尾矿为筑坝材料ꎬ，采用中砂ꎬ细砂和粉砂进行了物理破坝试验。然后利用FLOW软件ꎬ进行数值模拟验证。结果表明:采用中砂ꎬ时，溃坝主要表现为地表冲刷和位移破坏;采用粉砂ꎬ时，溃坝主要表现为向下冲刷破坏;物理试验与数值模拟在溃坝流量、溃坝时间ꎬ等方面均取得了较好的一致性ꎬ，表明试验与数值计算相结合的方法模拟尾矿溃坝的可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

中国安全科学学报

CiteScore

1.30

自引率

0.00%

发文量

8733

期刊介绍： China Safety Science Journal is administered by China Association for Science and Technology and sponsored by China Occupational Safety and Health Association (formerly China Society of Science and Technology for Labor Protection). It was first published on January 20, 1991 and was approved for public distribution at home and abroad. China Safety Science Journal (CN 11-2865/X ISSN 1003-3033 CODEN ZAKXAM) is a monthly magazine, 12 issues a year, large 16 folo, the domestic price of each book is 40.00 yuan, the annual price is 480.00 yuan. Mailing code 82-454. Honors: Scopus database includes journals in the field of safety science of high-quality scientific journals classification catalog T1 level National Chinese core journals China Science and technology core journals CSCD journals The United States "Chemical Abstracts" search included the United States "Cambridge Scientific Abstracts: Materials Information" search included