| 微胶囊包覆膨胀剂对煤矿封孔水泥膨胀性能的影响研究 |
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| 引用本文： | 刘健,,刘泽功,,吴海龙,,李重情,,娄亚北,.微胶囊包覆膨胀剂对煤矿封孔水泥膨胀性能的影响研究[J].中国安全生产科学技术,2015,11(9):45-50. |
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| 作者姓名： | 刘健 刘泽功 吴海龙 李重情 娄亚北 |
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| 作者单位： | (1.安徽理工大学 能源与安全学院，安徽 淮南232001;
2.安徽理工大学 煤炭高效开采省部共建教育部重点实验室，安徽 淮南232001) |
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| 摘 要： | 针对当前矿用水泥封孔材料中膨胀剂的膨胀能效发挥不足，会导致瓦斯抽采过程中封孔材料干缩漏气的现象，基于微胶囊缓控释放原理和材料“膨胀-强度协调发展”机理，运用微胶囊复合技术制得微胶囊UEA膨胀剂。借助SEM、XRD等测试手段，详细研究了几组水泥浆的膨胀性能。结果表明，基准组发生体积收缩；膨胀剂未处理组膨胀率峰值和终值较低；潮湿环境处理组膨胀能损失较大；微胶囊处理组具有延迟膨胀现象，较未处理膨胀剂组延迟2.5h，膨胀率终值较膨胀剂未处理组和潮湿环境处理组分别提高3.33‰和11.06‰。
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| 关 键 词： | 煤矿封孔材料 微胶囊 延迟膨胀 膨胀-强度协调发展 膨胀率 |
Study on effect of microcapsule coating expansion agent on expansion property of hole sealing cement in coal mine |
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| LIU Jian,' target="_blank" rel="external">,LIU Ze-gong,' target="_blank" rel="external">,WU Hai-long,' target="_blank" rel="external">,LI Zhong-qing,' target="_blank" rel="external">,LOU Ya-bei,' target="_blank" rel="external">.Study on effect of microcapsule coating expansion agent on expansion property of hole sealing cement in coal mine[J].Journal of Safety Science and Technology,2015,11(9):45-50. |
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| Authors: | LIU Jian " target="_blank">' target="_blank" rel="external"> LIU Ze-gong " target="_blank">' target="_blank" rel="external"> WU Hai-long " target="_blank">' target="_blank" rel="external"> LI Zhong-qing " target="_blank">' target="_blank" rel="external"> LOU Ya-bei " target="_blank">' target="_blank" rel="external"> |
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| Affiliation: | (1.School of Energy and Safety, Anhui University of Science and Technology, Huainan Anhui 232001, China;
2.Key Laboratory of Mine Safety and High Efficient Mining Jointly built by Province and Education Ministry, Anhui University
of Science and Technolog |
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| Abstract: | Currently, the expansion energy efficiency of expansion agent for hole sealing cement in coal mine is insufficient, and it causes the phenomenon of dry shrinkage and leakage in hole sealing material during the gas extraction process. Based on the principle of slowly controlled release of microcapsule and the "coordinated development of expansion-strength" mechanism of hole sealing material, the microcapsule composite technology was applied to prepare the microcapsule UEA expansion agent. By using the test methods of SEM and XRD, the expansion properties of several groups of cement slurry were studied in detail. The results showed that the volume contraction happened in benchmark group, the peak value and final value of expansion rate were lower in untreated agent group, and the loss of expansion energy was larger in damp environment treated group. The microcapsule treated group had the phenomenon of delayed expansion, the delayed time was 2.5 h compared with the untreated expansion agent group, and the final value of expansion rate increased by 3.33‰ and 11.06‰ respectively than those of untreated expansion agent group and damp environment treated group. |
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| Keywords: | hole sealing material in coal mine microcapsule delayed expansion coordinated development of expansion-strength expansion rate |
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