黑龙江科技大学学报2017，Vol.27Issue(1)：22-25,4.DOI:10.3969/j.issn.2095-7262.2017.01.005
新型复合封孔材料的密封性能
Sealing performance of new typed composite sealing material
摘要
Abstract
This paper proposes a novel composite sealing material as an improved alternative to conventional sealing material which suffers from disadvantages such as a poor sealing effect, a larger leakage, and a lower extraction in an effort to ensure the safety of mine production, enhance the sealing effect of extraction borehole, and improve the concentration of gas extraction.The research builds on an analysis of the three leakage channels, namely the leakage channel of the material itself, the leakage channel around the coal seam and the gap between the sealing material and the pore wall, identifies the three factors influencing the air leakage, and is validated by an indoor sealing performance test using the new type of composite material and polyurethane as the sealing material, as well as field tests.The study shows that composites boast a better sealing performance than polyurethane and the composite seal provides a 75% higher average volume of gas extraction than polyurethane.The results demonstrate that the composite material is a new typed inorganic sealing material with a higher compactness, a higher expansibility and a stronger binding and affords a better gas drainage borehole sealing effect.关键词
瓦斯抽采/复合材料/钻孔密封/瓦斯浓度Key words
gas extraction/compound material/borehole sealing/gas concentration分类
矿业与冶金引用本文复制引用
林柏泉,李博洋,郝志勇..新型复合封孔材料的密封性能[J].黑龙江科技大学学报,2017,27(1):22-25,4.基金项目
国家自然科学基金项目(51474211) （51474211）
