基于黄土膏体充填材料配比优化试验研究  

Experimental Study on Proportion Optimization of Loess Paste Filling Materials

作　　者：赵兵朝[1,2] 翟迪 杨啸 孙浩[1,2] 赵柯[3] 李龙清[1,2] ZHAO Bingchao;ZHAI Di;YANG Xiao;SUN Hao;ZHAO Ke;LI Longqing(College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China;Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi'an,Shaanxi 710054,China;Shanxi Qianxi Mining(Group)Co.,Ltd,Jiexiu,Shanxi 032000,China)

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]西部矿井开采及灾害防治教育部重点实验,陕西西安710054 [3]室山西汾西矿业(集团)有限责任公司,山西介休市032000

出　　处：《矿业研究与开发》2020年第3期50-55,共6页Mining Research and Development

基　　金：国家自然科学基金资助项目(51874230);陕西省创新能力支撑计划-科技创新团队项目(2018TD-038);陕西省自然科学基础研究计划(陕煤联合基金)项目(2019JLM-41).

摘　　要：为寻求价格日益增长的粉煤灰膏体充填材料的替代品,以山西省某矿4901充填工作面为工程背景,采用理论分析、实验室试验和现场调研等方法,研究了黄土材料作为粉煤灰替代品的替换效果及最优配比。试验和现场应用结果表明:黄土膏体充填材料价格低廉,作为传统粉煤灰膏体充填材料的替代品替换效果较优;黄土膏体充填材料的最优配比方案为水固比(水与固体充填材料质量比)1∶1.6、固相比(矸石与水泥质量比)5∶5及土灰比(黄土与粉煤灰质量比)4∶2时,膏体充填材料稳定性高,材料的后期抗压强度高达5.5MPa;以水泥质量的6%作为膏体充填材料添加剂时,凝结时间缩短79.17%。该研究成果对西部地区有一定的借鉴和参考价值。In order to find a substitute of coal ash paste filling material with increasing price,taking the filling workface 4901 of a mine in Shaanxi Province as an engineering background,theoretical analysis,laboratory test and on-site investigation were jointly used to study the substitution effect and optimal ratio of loess material as a substitute of coal ash.Experimental and field application results were obtained as follows.Firstly,the loess paste filling material was cheap,andhad a better effect as a substitute for the traditional coal ash paste filling material.Secondly,the optimal proportioning scheme of loess paste filling material was:water-solid ratio(mass ratio of water to solid filling material)1:1.6,solid ratio(mass ratio of vermiculite to cement)5:5 and soil-ash ratio(mass ratio of loess to fly ash)4:2.In such a case,the stability of the paste filling material was high,and the late compressive strength of the material was as high as 5.5 MPa.Lastly,when 6%of the cement mass was used as the additive paste filling material,the setting time was shortened by 79.17%.

关 键 词：黄土 膏体充填材料 固相比 土灰比 抗压强度 

分 类 号：TD853.34[矿业工程—金属矿开采]