石灰石粉与粉煤灰交互配比对膏体充填体性能的影响研究  

Influence of interaction ratio between limestone powder and fly ash on performance of paste filling material

作　　者：吕文玉[1,2] 汤理安 伍永平 解盘石[1,2] 李博[1] 郭凯 LYU Wenyu;TANG Li’an;WU Yongping;XIE Panshi;LI Bo;GUO Kai(College of Energy Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]西安科技大学西部矿井开采及灾害防治教育部重点实验室,陕西西安710054

出　　处：《煤炭工程》2024年第11期126-131,共6页Coal Engineering

基　　金：国家自然科学基金项目(52174127,52374137);陕西省重点研发计划项目(2023-YBGY-318);陕西省高校青年创新团队项目。

摘　　要：为了探究石灰石粉与粉煤灰的交互配比对膏体充填体性能的影响,采用石灰石粉替代粉煤灰在0、25%、50%、75%、100%的替代百分比情况下制备一系列试样,通过测试膨胀率、塌落度、泌水率、凝结时间以及抗压强度等指标,评估了膏体充填体的工作性能以及抗压强度。研究结果表明,石灰石粉和粉煤灰的交互配比对矿用膏体充填体性能有显著影响;随着石灰石粉替代量的增加,能有效地降低充填材料的泌水率与凝结时间,提高膏体的膨胀率;当替代量在25%左右时,充填材料的抗压强度得到增强,当养护周期大于3 d,石灰石粉替代量大于25%时,抗压强度随替代量的提高而降低。To explore the influence of the interactive ratio of limestone powder and fly ash on the performance of paste filling materials,a series of samples were prepared using limestone powder instead of fly ash at 0,25%,50%,75%,and 100%substitution percentages.The working performance and compressive strength of the paste filling body were evaluated by testing indicators such as expansion rate,slump,bleeding rate,setting time,and compressive strength.The research results indicate that the interaction ratio of limestone powder and fly ash has a significant impact on the performance of mineral paste filling materials.As the replacement amount of limestone powder increases,it can effectively reduce the bleeding rate and setting time of the filling material,and improve the expansion rate of the paste.When the replacement ratio is around 25%,the compressive strength of the filling material is enhanced.When the curing period is longer than 3 days and the replacement amount of limestone powder is greater than 25%,and the compressive strength decreases as the replacement amount is increasing.

关 键 词：石灰石粉 粉煤灰 膏体充填体 抗压强度 

分 类 号：TD823.7[矿业工程—煤矿开采]