尾矿库漫顶溃坝数学模型研究与应用

邓曌; 陈生水; 钟启明

doi:10.11779/CJGE201705018

尾矿库漫顶溃坝数学模型研究与应用 English Version

邓曌¹,
陈生水^{1, 2},
钟启明^{1, 2}

1. 南京水利科学研究院岩土工程研究所,江苏南京 210024;
2. 水利部土石坝破坏机理与防控技术重点实验室,江苏南京 210024

基金项目: 国家自然科学基金项目（51539006,51379130,51379129）

详细信息

作者简介:
邓曌（1988- ）,男,江苏省扬州人,博士研究生,主要从事尾矿库溃决机理及数值模拟的研究工作。E-mail: nuohan2@sina.com。

中图分类号: TU641；X936
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出版历程
- 收稿日期: 2016-02-17
- 发布日期: 2017-05-24

Mathematical model for breach of tailings dam due to overtopping and its application

1. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China;
2. Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-Rock Dam of the Ministry of Water Resources, Nanjing 210024, China

摘要

摘要: 基于水砂混合物非平衡连续方程和动量方程,考虑尾矿库溃坝过程中溃口及底床变化对溃坝下泄物中尾矿砂体积浓度的影响,建立了一个描述尾矿库漫顶溃坝溃口发展过程和溃口下泄物流量过程的数学模型。应用该数学模型对某尾矿库漫顶溃坝过程进行了模拟,结果表明,尾矿库溃坝过程中下泄物体积浓度变化很大,前期下泄物以水为主,尾矿砂含量较低且以悬移质运动为主;后期下泄物主要以尾矿砂为主,水的含量很低,尾矿砂以推移质运动为主,当下泄物底床剪应力增量小于尾矿砂起动的临界剪应力时,溃坝过程停止。
- 尾矿库 /
- 漫顶溃决 /
- 水砂耦合 /
- 体积浓度变化 /
- 数值模拟
Abstract: Based on the non-equilibrium continuous equation and momentum equation for water-sand mixture, considering the impact on the variation of sand volume concentration due to the change of breach slope and bed, a mathematical model is established to describe the breach development and drainage process of tailings dam. The mathematical model is employed to simulate the breach process of a tailings dam. The calculated results show that the volume concentration of tailing sand changes greatly during the drainage process. At the early stage of drainage, the main part of the discharge materials is water, and the distribution of sand is mainly suspended load. At the later stage, the main part of the discharge materials is sand, and the distribution of sand is mainly bed load. The drainage process stops while the bed shear stress increment of discharge materials is less than the critical shear stress of sand.
- tailings dam /
- overtopping failure /
- water-sand coupling /
- variation of volume concentration /
- numerical simulation

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参考文献(34)

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