矿用双组分复合注浆材料试验与应用研究  

Experiment and Application Study of Two-component Composite Grouting Material for Mine

作　　者：白龙剑 严国超[1] BAI Longjian;YAN Guochao(School of Mining Engineering,Taiyuan University of Trchnology,Taiyuan 030024,China)

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《煤矿安全》2020年第12期12-17,22,共7页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51974195)。

摘　　要：为了研发1种绿色环保注浆材料,以硅酸盐水泥、硫铝酸盐水泥与黄土、粉煤灰和沸石粉为基材,通过优化粒径分布,添加适量外加剂,制备了新型双液水泥-黄土粉煤灰基(PS-CF)注浆材料。在实验室研究了PS-CF材料的可泵性、黏度、稳定性、初终凝时间、力学参数等主要性能,对比分析了硅酸盐水泥P42.5与PS-CF的力学性能;应用XRD和SEM/EDS测试手段,进行物相分析和微观结构观察;在兑镇煤矿进行了工业试验。结果表明:该材料流动性良好、微膨胀、早强快硬,3 d强度可达最终强度52%,其早期强度明显优于硅酸盐水泥;PS-CF有效提高了破碎煤岩的整体性。In order to develop a green grouting material,portland cement,sulphoaluminate cement and loess,fly ash and zeolite powder were used as the substrate.By optimizing the particle size distribution and adding appropriate amount of admixture,a new type of double liquid cement-loess fly ash-base(PS-CF)grouting material was prepared.The main properties of PS-CF materials,such as pumpability,viscosity,stability,initial setting time and mechanical properties were studied in the laboratory.The mechanics properties of portland cement P42.5 and PS-CF were compared and analyzed.XRD and SEM/EDS tests were used for phase analysis and microstructure observation,industrial trials are carried out at Duizhen Coal Mine.The results show that the material has good fluidity,slight expansion,early strength and fast hardening,and the 3 d strength can reach the final strength of52%.Its early strength is obviously better than portland cement.PS-CF effectively improves the integrity of broken coal and rock.

关 键 词：巷道加固 注浆材料 硫铝酸盐 黄土 物相分析 工程应用 

分 类 号：TD353[矿业工程—矿井建设]