| 尾砂级配对充填体强度的影响及优化 |
| |
| 引用本文： | 汪海萍,谭玉叶,吴 姗,周家祥,王 雨.尾砂级配对充填体强度的影响及优化[J].有色金属(矿山部分),2014,66(4):26-30. |
| |
| 作者姓名： | 汪海萍 谭玉叶 吴 姗 周家祥 王 雨 |
| |
| 作者单位： | 北京科技大学金属矿山高效开采与安全教育部重点实验室;北京科技大学土木与环境工程学院;武汉钢铁集团矿业有限责任公司大冶铁矿; |
| |
| 基金项目： | 国家科学自然基金资助项目(51374033);教育部博士点基金(20120006110022);中央高校基本科研业务费专项资金(FRF-SD-12-003A) |
| |
| 摘 要： | 尾砂级配是影响充填体力学性质的重要参数,研究级配对充填体强度的影响具有重大现实意义。以A、B和C三种全尾砂为试验材料,通过激光粒度分析仪测得三种全尾砂粒径级配组成,结合全尾砂充填体强度,得到级配与充填体强度之间的关系:C全尾砂级配优于B,A全尾砂级配较差;级配越好,充填体强度越高。借助XRD能谱分析和SEM电镜分析可得,A试块和C试块由于级配不同,导致水化反应初期(3d)A试块钙矾石(针状)明显少于后者,28d报告时C试块团絮状胶凝物黏结更紧密,从而影响了试块的充填体强度,使得级配较优的C试块充填体强度明显高于A试块。通过优化级配的方法对级配较差的全尾砂A进行优化分级,提高了充填体强度。
|
| 关 键 词： | 级配 充填体强度 XRD能谱分析 SEM 优化级配 |
| 收稿时间： | 2013/12/14 0:00:00 |
| 修稿时间： | 2013/12/16 0:00:00 |
Effects and optimization of tailings gradation on the backfill strength |
| |
| Authors: | wanghaiping and Tan Yuye |
| |
| Affiliation: | University of Science and Technology Beijing,University of Science and Technology Beijing |
| |
| Abstract: | Bailing Gold Mine is located in Anqing iron and copper polymetallic metallogenic belt in the middle and lower reaches of Yangtze River. Based on the geological and geochemical characteristics of the mine, the abnormal combination characteristics of the area were emphasized in analysis. It is proposed that north-south compressive shear structure and 20° ~50° square compressive shear structure are the major ore-controlling features, as well as the main structure symbol for prospecting prediction. |
| |
| Keywords: | geological characteristics geochemical characteristics gold mine prospecting prediction |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《有色金属(矿山部分)》浏览原始摘要信息 |
|
点击此处可从《有色金属(矿山部分)》下载全文 |
