东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (6): 882-886.DOI: 10.12068/j.issn.1005-3026.2015.06.027

• 资源与土木工程 • 上一篇    下一篇

尾砂充填料浆流变性能模型与试验研究

蔡嗣经1,2, 黄刚1,2, 吴迪3, 张亚东1,2   

  1. (1. 北京科技大学 教育部金属矿山高效开采与安全重点实验室, 北京100083;2. 北京科技大学 土木与环境工程学院, 北京100083;3. 中国矿业大学(北京) 资源与安全工程学院, 北京100083)
  • 收稿日期:2013-11-22 修回日期:2013-11-22 出版日期:2015-06-15 发布日期:2015-06-11
  • 通讯作者: 蔡嗣经
  • 作者简介:蔡嗣经(1952-),男,江西南昌人,北京科技大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51074018).

Experimental and Modeling Study on the Rheological Properties of Tailings Backfill

CAI Si-jing1,2, HUANG Gang1,2, WU Di 3, ZHANG Ya-dong1,2   

  1. 1. Key Laboratory of the Ministry of Education for High Efficiency Exploitation and Safety of Metal Mine,University of Science and Technology Beijing,Beijing 100083,China; 2. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; 3. Department of Mining Engineering, China University of Mining and Technology, Beijing 100083, China.
  • Received:2013-11-22 Revised:2013-11-22 Online:2015-06-15 Published:2015-06-11
  • Contact: HUANG Gang
  • About author:-
  • Supported by:
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摘要: 以地下矿山尾砂充填料为研究对象,试验研究与理论分析相结合的方法,利用R/S+流变仪和岩石力学试验机对充填料浆的流变性能进行试验研究.引入Papanastasiou黏塑性流体模型来表征尾砂充填料浆的黏度和切应力变化过程.研究结果表明:该黏塑性流体模型预测的结果和试验结果相吻合,因此可用于理论分析计算;得到不同的压力增长指数下切应力-切变速率曲线;尾砂充填料浆的黏度和屈服应力随料浆质量分数的增加而增大;同一质量分数下,胶结尾砂的黏度和屈服应力比全尾砂大.通过对充填料浆流变性能的研究,为矿山充填设计提供了理论和实验依据.

关键词: 充填采矿法, 尾砂充填料浆, 黏塑性流体, 屈服应力, 流变性能

Abstract: Taking backfill material for underground mine as the object of study, this paper aims to studying its rheological properties and strength characteristics by using the R/S+ rheometer and rock mechanics testing machine with the methods of experiment and theory analysis. And the visco-plastic fluid model of Papanastasiou was introduced to analyze the changing progress of viscosity and shear stress of tailings backfill. The results show that, the calculated results of this model were identical to the experimental results, thus it could be verified for theoretical calculation. In addition, the curve of shear stress-shearing rate at the different stress growth parameter was gotten, it is found that the viscosity and yields stress of backfilling develop with the increase of its mass concentration and the viscosity and yields stress of cementing tailings were higher than those of whole tailings at the same mass concentration. This study on rheological properties of tailings backfill are useful for designing filling station in mine.

Key words: mining with backfill, tailings fill, visco-plastic fluid, yield stress, rheological properties

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