[1]Phan Van Viet,王东.热电厂炉渣作为煤矿膏体充填材料的配比试验研究[J].中国安全生产科学技术,2018,14(1):49-55.[doi:10.11731/j.issn.1673-193x.2018.01.008]
PHAN Van Viet,WANG Dong.Experimental study on proportioning of bottom ash in thermal power
plant as paste filling material of coal mine[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(1):49-55.[doi:10.11731/j.issn.1673-193x.2018.01.008]
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热电厂炉渣作为煤矿膏体充填材料的配比试验研究
PHAN Van Viet,WANG Dong.Experimental study on proportioning of bottom ash in thermal power plant as paste filling material of coal mine[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(1):49-55.[doi:10.11731/j.issn.1673-193x.2018.01.008]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 14
- 期数:
- 2018年1期
- 页码:
- 49-55
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2018-01-31
文章信息/Info
- Title:
- Experimental study on proportioning of bottom ash in thermal power plant as paste filling material of coal mine
- 文章编号:
- 1673-193X(2018)-01-0049-07
- Keywords:
- bottom ash; fly ash; filling material; paste filling; slump; fluidity
- 分类号:
- X936
- 文献标志码:
- A
- 摘要:
- 为了寻求既满足充填工艺要求又能够降低成本的新型充填材料，通过一系列试验，研究了热电厂粉煤灰/炉渣比例、膏体质量浓度和水泥含量等因素对膏体充填材料性能的影响规律，据此确定了材料最优配比。结果表明：随着粉煤灰/炉渣比例的增加，坍落度、扩展度和充填体强度均呈现先较大幅度增加然后又缓慢减小的变化趋势，料浆泌水率呈近似负指数规律降低；随着质量浓度的增加，坍落度、扩展度及泌水率均随之显著变小，充填体强度近线性增大；随着水泥含量的增加充填体强度随之显著增大，坍落度、扩展度和泌水率均呈现缓慢减小的变化趋势；材料的最优配比为粉煤灰、炉渣和水泥的质量比为 20∶48∶6，质量浓度为 74%，此时料浆流动性和充填体强度完全符合充填开采基本要求。
- Abstract:
- In order to find the new filling material which not only meets the requirements of filling technology but also reduces the cost, the bottom ash of thermal power plant was used as coarse aggregate to prepare the paste filling material. Through a series of experiments, the influence of the factors such as fly ash/bottom ash ratio, mass concentration of paste and cement content on the performance of paste filling material was studied, and the optimal proportion of material was determined accordingly. The results showed that with the increase of the fly ash/bottom ash rate, all the slump, slump flow and strength of filling body increased with a large amplitude at the beginning and then decreased slowly, and the bleeding rate of slurry decreased with the negative exponential law approximately. With the increase of mass concentration, all the slump, slump flow and bleeding rate decreased significantly, while the strength of filling body increased linearly. With the increase of cement content, the strength of filling body increased significantly, while all the slump, slump flow and bleeding rate decreased slowly. The optimal proportion of material was that the mass ratio of fly ash, bottom ash and cement was 20:48:6, and the mass concentration was 74%, whereby the fluidity of slurry and the strength of filling body could completely meet the basic requirements of filling mining.
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相似文献/References:
[1]孙恩吉,张兴凯,李全明.火电厂粉煤灰力学特性试验研究[J].中国安全生产科学技术,2015,11(3):29.[doi:10.11731/j.issn.1673-193x.2015.03.005]
SUN En-ji,ZHANG Xing-kai,LI Quan-ming.Experimental study on mechanical characteristics of coal ash in coal-fired power plants[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(1):29.[doi:10.11731/j.issn.1673-193x.2015.03.005]
备注/Memo
- 备注/Memo:
- 国家自然科学基金项目(51104084，51474119)；国家自然科学基金重点项目(U1361211)
