尾砂粒径对尾矿坝漫顶溃坝的影响

doi:10.16265/j.cnki.issn1003-3033.2020.04.025

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (4): 160-165.doi: 10.16265/j.cnki.issn1003-3033.2020.04.025

尾砂粒径对尾矿坝漫顶溃坝的影响

武立功^1,2, 肖利兴^1,2, 刘晓峰^2,3 工程师, 姚池^1,2 副教授, 姜清辉^1,2 教授, 周创兵^1,2 教授

1.南昌大学建筑工程学院,江西南昌 330031;
2.江西省尾矿库工程安全重点实验室,江西南昌 330031;
3.中国瑞林工程技术股份有限公司环境与安全事务部,江西南昌330031

收稿日期:2020-01-05 修回日期:2020-03-18 出版日期:2020-04-28 发布日期:2021-01-27
作者简介:武立功(1996—),男,山西吕梁人,硕士研究生,研究方向为尾矿库溃坝物理试验及数值模拟分析。E-mail:1210021325@qq.com。
基金资助:
国家自然科学基金资助(51879127,41762020,51769014);江西省自然科学基金资助(20192ACB2102,20192ACB20020);江西省重点实验室计划项目(20181BCD40003)。

Influence of particle size on overtopping dam break of tailings dam

WU Ligong^1,2, XIAO Lixing^1,2, LIU Xiaofeng^2,3, YAO Chi^1,2, JIANG Qinghui^1,2, ZHOU Chuangbing^1,2

1. School of Architecture and Engineering, Nanchang University, Nanchang Jiangxi 330031, China;
2. Jiangxi Key Laboratory of Tailings Reservoir Engineering Safety, Nanchang Jiangxi 330031, China;
3. Environmental and Safety Affairs Department, China Ruilin Engineering Technology Co., Ltd., Nanchang Jiangxi 330031, China

Received:2020-01-05 Revised:2020-03-18 Online:2020-04-28 Published:2021-01-27

摘要/Abstract

摘要： 为探究不同粒径尾砂筑坝的尾矿坝发生漫顶溃坝时的溃决反应,以永平燕仓尾矿库尾砂为筑坝材料,将尾矿砂筛分为中砂、细砂、粉砂,开展溃坝物理模型试验,并采用FLOW^3D软件进行数值模拟验证。结果表明:中砂筑坝时,漫顶溃坝溃决形式主要表现为冲刷推移破坏;粉砂筑坝时,溃决形式主要表现为侵蚀下切破坏;细砂筑坝时,则表现出冲刷推移和侵蚀下切2种特性。物理试验和数值模拟在溃坝流量、时间等方面取得较好的一致性,证明物理模型和数值计算相结合的方法在模拟尾矿库漫顶溃坝中具有一定的可靠性。

关键词: 尾矿坝, 粒径, 漫顶溃坝, 物理试验, 数值模拟

Abstract: In order to explore overtopping break reactions of dam constructed by tailings of different particle sizes, with tailings of Yancang tailings pond in Yongping Copper Mine used as dam material, physical dam-break test was carried out with medium sand, fine sand and silt. Then, numerical simulation was conducted for verification by using FLOW^3D software. The results show that when middle sand is used, dam collapse is mainly represented by surface scouring and displacement failure while being represented majorly by downward erosive when silt is used, 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 time, etc., which indicates reliability of the method combining both test and numerical calculation in simulating tailings dam break.

Key words: tailings dam, particle size, overtopping dam break, physical experiment, numerical simulation

中图分类号:

X936

武立功, 肖利兴, 刘晓峰, 姚池, 姜清辉, 周创兵. 尾砂粒径对尾矿坝漫顶溃坝的影响[J]. 中国安全科学学报, 2020, 30(4): 160-165.

WU Ligong, XIAO Lixing, LIU Xiaofeng, YAO Chi, JIANG Qinghui, ZHOU Chuangbing. Influence of particle size on overtopping dam break of tailings dam[J]. China Safety Science Journal, 2020, 30(4): 160-165.

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尾砂粒径对尾矿坝漫顶溃坝的影响

Influence of particle size on overtopping dam break of tailings dam

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