本文選題：煤炭自然發(fā)火　切入點(diǎn)：漏風(fēng)　出處：《安徽理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著國民經(jīng)濟(jì)快速的發(fā)展,煤炭成為了我國不可或缺的能源支柱,然而煤炭自然發(fā)火導(dǎo)致的礦井火災(zāi)除了造成煤炭資源的大量浪費(fèi),還使煤礦工人的生命岌岌可危。 眾所周知,足量的破碎遺煤、持續(xù)的漏風(fēng)供氧、發(fā)火點(diǎn)有積聚氧化熱的環(huán)境、持續(xù)足夠的時間是引起煤炭自然發(fā)火的四個因素,因此堵住漏風(fēng)進(jìn)而隔絕氧氣的供給是防治煤炭自然發(fā)火釜底抽薪的措施。在研究了目前礦用封堵注漿材料的分類、特點(diǎn)、使用條件、使用方法、注意事項(xiàng)以及是否滿足環(huán)保要求的基礎(chǔ)上,研制出了一種新型的注漿堵漏材料。通過正交設(shè)計(jì)法設(shè)計(jì)試驗(yàn),利用極差法分析、處理注漿材料性能參數(shù)的測試結(jié)果,得出：在不同水固比和摻量下,水泥以及添加劑對注漿堵漏材料粘度、析水率、結(jié)石率等性能參數(shù)的影響大小排序。此外,在其他試驗(yàn)材料和摻量不變的情況下,通過SEM試驗(yàn)來觀察并分析不同摻量下的聚丙烯纖維對漿體試件微觀結(jié)構(gòu)的影響,從而確定注漿堵漏材料的最佳水固比以及水玻璃、減縮劑、增稠劑、聚丙烯纖維添加劑的摻量分別為1：1.4,2.5%,1.4%,0.4%,0.3%。最后,凝聚封堵試驗(yàn)和堵漏風(fēng)模擬試驗(yàn)結(jié)果表明,抑制煤炭自然發(fā)火注漿堵漏材料具有較好的堵漏風(fēng)效果。
[Abstract]:With the rapid development of the national economy, coal has become an indispensable energy pillar in China. However, the coal mine fire caused by the spontaneous combustion of coal not only causes a large amount of waste of coal resources, but also makes the lives of coal miners at risk. As is known to all, sufficient coal fragmentation, continuous air leakage and oxygen supply, ignition point has an environment of accumulated oxidation heat, and a sufficient amount of time is the four factors that cause the spontaneous combustion of coal. Therefore, blocking air leakage and isolating the supply of oxygen is a measure to prevent coal spontaneous combustion. In this paper, the classification, characteristics, use conditions and methods of grouting materials for mine plugging are studied. Based on the matters needing attention and whether or not to meet the requirements of environmental protection, a new grouting plugging material has been developed. Through the orthogonal design experiment and the analysis of range difference method, the test results of grouting material performance parameters have been processed. It is concluded that the influence of cement and additives on the viscosity, water evolution rate, stone rate and other performance parameters of slurry plugging materials are ranked under different water / solid ratios and different dosages. In addition, under the condition of other test materials and the same amount of additives, The effect of polypropylene fiber on the microstructure of slurry was observed and analyzed by SEM test, and the optimum water / solid ratio and water glass, shrinkage reducer and thickener were determined. The content of polypropylene fiber additive is 1: 1. 4 / 2. 5 and 1. 4% respectively. Finally, the results of condensation plugging test and air plugging simulation test show that the air plugging effect of coal spontaneous combustion grouting is better than that of coal spontaneous combustion grouting.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD752.2

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