中国科技核心期刊
美国化学文摘社（CAS）数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
机制砂尾泥和米石制备充填料浆坍落度试验研究
- 作者：
- 赖伟
- 作者单位：
- 长沙矿山研究院有限责任公司&中南大学资源与安全工程学院&国家金属采矿工程技术研究中心
基金项目：
- 湖南省“湖湘青年英才”支持计划（2020RC3088）
详细信息：
- 作者简介：
- 赖伟（1985—），男，四川德阳人，高级工程师，博士，从事采矿工程、矿山充填工艺技术和固废资源化利用研究工作；长沙市岳麓区麓山南路343号，长沙矿山研究院有限责任公司，410012；E-mail：915673059@qq.com
- 通讯作者：
- isnull
- PDF下载
Experimental study on the slump of filling slurry prepared by machine-made sand tailing mud and rice gravel
- English Author：
- Changsha Mining Research Institute Co.,Ltd.&School of Resources and Safety Engineering,Central South University&National Engineering Research Center of Metal Mining
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
针对矿山废石生产机制砂产生的尾泥处置问题，结合矿山采空区充填治理，提出了尾泥充填处置的技术思路。为获得满足管道输送要求的充填料浆配比，开展了坍落度试验,以测试充填料浆的流动性，测试了不同尾泥（-0.352 mm）和米石（5~10 mm）配比的坍落度。结果表明：当尾泥量＜50 %时，由于米石细粒级缺失，孔隙率大，细集料不能完全填充孔隙，易离析；当尾泥量≥50 %时，米石悬浮于细集料料浆中，充填料浆的和易性、保水性和黏聚性好，制备的充填料浆能够满足管道输送要求，料浆浓度波动对坍落度影响显著。
关键词:
废石；机制砂；尾泥；充填；坍落度；流动性
Abstract:
In light of the tail mud disposal challenge caused by sand stone production by mine waste rock preparation machine,and taking into account the mined-out area filling treatment,the technical idea to dispose of tailing mud by filling is put forward.To obtain the ratio of filling slurry that meets the requirements of pipeline transportation,a slump test was carried out to test the fluidity of filling slurry and the slump of tailing mud (-0.352 mm) of different ratios and rice gravel(5～10 mm).The results show that when the tailing mud content is less than 50 %,the fine aggregate cannot completely fill the pores due to the rice gravel absence and large porosity,and it is easy to be isolated; when the tailing mud content is ≥50 %,rice gravel is suspended in a fine aggregate slurry,and the backfilling slurry has good workability,water retention,and cohesion,and the prepared backfilling slurry can meet the requirements of pipeline transportation.Slurry concentration fluctuation has a significant impact on the slump.
Keywords:
waste rock;machine-made sand;tailing mud;filling;slump;liquidity
