CAJ | 학술논문

针对矿用注浆封堵材料的缺点，如黄泥灌浆材料容易产生裂缝，堵漏风效果差，罗克休、膨胀水泥等材料价格昂贵、含挥发性溶剂，对人体有毒害作用，研制出一种新型的注浆堵漏材料，该材料以水泥为基料，添加减缩剂、聚丙烯纤维、水玻璃、增稠剂。通过试验测试了不同水固比下浆体的粘度、流动度、凝结时间、结石率等性能参数，并利用电镜扫描对浆体的微观结构进行观察，进而确定最佳水固比。研究结果表明，抑制煤炭自然发火注浆堵漏材料的最佳水固比为1：1．4；当聚丙烯纤维的掺量为0．25％，水玻璃的掺量为2．5％时，结石体的微观结构紧致，裂隙较小，满足堵漏风材料的要求。
침대광용주장봉도재료적결점，여황니관장재료용역산생렬봉，도루풍효과차，라극휴、팽창수니등재료개격앙귀、함휘발성용제，대인체유독해작용，연제출일충신형적주장도루재료，해재료이수니위기료，첨가감축제、취병희섬유、수파리、증주제。통과시험측시료불동수고비하장체적점도、류동도、응결시간、결석솔등성능삼수，병이용전경소묘대장체적미관결구진행관찰，진이학정최가수고비。연구결과표명，억제매탄자연발화주장도루재료적최가수고비위1：1．4；당취병희섬유적참량위0．25％，수파리적참량위2．5％시，결석체적미관결구긴치，렬극교소，만족도루풍재료적요구。
Considering the shortcomings of mine grouting plugging material, such as yellow mud grouting material is easy to produce cracks and the effect of plugging wind is poor; Luo Kexiu, expansive cement and other materials are expensive and contains volatile solvent which is toxic to the human body, a kind of grouting material based on cement added with shrinkage-reducing agent, polypropylene fiber, sodium silicate and thickener etc.was devel-oped.The viscosity, fluidity, setting time, the rate of stone and other performance parameters were tested under different water solid ratios of slurry by experiments, in addition by using the electron microscope, the microscopic structure of slurry was scanned, then the best water solid ratio of slurry material was determined.It showed that the best water solid ratio of grouting plugging materials for inhibition of coal spontaneous combustion is 1:1.4.When the dosage of polypropylene fiber is 0.25%, and that of sodium silicate is 2.5%, the microscopic structure of stone body is compact, and its crack is small, which can meet the requirements of material for plugging the wind.