摘要
研究了一种煤矿用新型无机发泡充填密闭材料,该材料为单一粉体,按水灰比2∶1搅拌混合10s即可物理发泡,1kg粉料能够产生12.7L的泡沫体,泡沫体湿密度为0.236g/cm3;1d龄期抗压强度为0.11MPa,14d龄期抗压强度为0.238MPa且压缩变形30%不开裂。采用专用注浆泵实现材料发泡、泵送一体化,最大泵送距离超过300m,操作时可以远离冒落危险区。该技术成功应用于临涣煤矿Ⅱ1031机巷(高瓦斯)冒顶区治理,施工过程操作方便、快捷、高效且安全,能够快速有效地解决高瓦斯矿井巷道高冒区充填密闭的难题。
A new mine inorganic foaming material for filling and sealing was studied, the material was single powder, which could physical foam after stirring for 10 seconds by a water/cement ratio of 2 ： 1, and 1 kg powder could produced 12.7 L foams with a wet density of 0. 236 g/cm3. The compressive strength of the foam material could reach 0.11 MPa at curing age of 1 day and 0. 238 MPa at curing age of 14 days, at the same time was indehiscent with a 30% compressive deformation degree. The special grouting pump could realize integration of material foaming and pumping transportation, and grouting operation kept away from caving danger zone with 300 m maximum pumping distance. The technology successfully applied to high gas roof fall zone government in Ⅱ 1031 transportation roadway of Linhuan Coal Mine, and the easy quick, high-efficient and safe operation process could solve the filling and sealing problem of high roof fall zone in high gas mine roadway.
作者
于维雨
王继勇
郭建明
陈杨
马磊
Yu Weiyu1,2,3 , Wang Jiyong1,2,3 , Guo Jianming1,2,3 , Chen Yang1,2,3 , Ma Lei1,2,3(1. Mine Oil Products Branch of China Coal Research Institute, Chaoyang, Beijing 100013, China; 2. State Key Laboratory of Coal Resources High-Efficient Mining and Clean Utilization, Chaoyang, Beijing 100013, China; 3. National Energy Key Laboratory of Coal High-Efficient Utilization ＆ Energy-Saving and Emission Reduction Technology and Equipment, Chaoyang, Beijing 100013, Chin)
出处
《中国煤炭》
2018年第3期143-146,共4页
China Coal
基金
煤炭科学技术研究院科技发展基金资助项目(2016JC08)
关键词
无机充填材料
发泡材料
高冒区
充填密闭
inorganic filling material, foaming material, high roof fall zone, filling and sealing
