黏土矿物材料在煤矿注浆领域的研究进展与前景展望

Research Progress and Prospect of Clay Mineral Materials in the Field of Coal Mine Grouting

我国煤炭资源的开采将进入深部开采阶段,传统的无机和有机注浆材料难以应对深部开采高应力、高地温、高岩溶水压的工程条件。黏土矿物具有特殊的层状结构及高膨胀性、良好的热稳定性、高火山灰活性等理化特征,已被广泛用于煤矿注浆材料领域。近年来,国内外学者开发了纯黏土注浆材料、水泥-黏土复合注浆材料以及有机物-黏土复合注浆材料,并阐明了各类材料的用途及黏土矿物作为外加填料的强化机理。本文基于对黏土矿物结构、特性、表征及应用的阐述,综合近年来国内外科研人员对煤矿含黏土注浆材料的研究,归纳了含黏土注浆材料的开发现状,探讨了黏土矿物用于煤矿注浆的必要条件和共性特征,指出了当前煤矿含黏土注浆材料研究中存在的问题,并对今后含黏土注浆材料的开发提出了展望。

The mining of coal resources in China will enter the stage of deep mining,and traditional organic and inorganic grouting materials are difficult to cope with the engineering conditions of high stress,high temperature,and high rock solution water pressure in deep mining.Clay mineral have special layered structure,high expansibility,good thermal stability,high volcanic ash activity and other physical and chemical characteristics,which has been widely used in the field of grouting materials in coal mines.In recent years,scholars at home and abroad have developed pure clay grouting materials,cement clay composite grouting materials and organic clay composite grouting materials,clarified the uses of various materials,studied the strengthening mechanism of clay mineral as additional fillers.Based on the explanation of the structure,characteristics,characterization,and application of clay minerals,combined the research of domestic and foreign research teams on clay containing grouting materials in coal mines in recent years,This article summarizes the current development status of clay containing grouting materials,explores the necessary conditions and common characteristics of clay minerals used in coal mine grouting,points out the problems in current research on clay containing grouting materials in coal mines,and puts forward prospects for the future development of clay containing grouting materials.