摘要
为解决岳城煤矿23302巷瓦斯抽采钻孔封孔效果差、抽采浓度低等问题,对封孔材料配比进行了改进研究,对凝结时间和抗压强度进行了重点改进,并在现场进行了效果检验。试验结果表明:改进后钻孔瓦斯抽采平均浓度提高了1倍以上,瓦斯抽放量提高到1.5倍以上,改进效果显著。
In order to solve the problems of poor sealing effect and low concentration of gas drainage hole in the 23302 roadway of Yuecheng Coal Mine,the ratio of sealing material is improved,the setting time and compressive strength are improved,and the effect is tested on the spot.The experimental results show that the average concentration of borehole gas drainage is increased by more than 1 times and the amount of gas drainage is increased to more than 1.5 times,and the improvement effect is remarkable.
作者
邢王峰
Xing Wangfeng(Shanxi Jin Coal Group Qinxiu Company Yuecheng Coal Mine,Shanxi Jincheng 048006)
出处
《山东煤炭科技》
2020年第10期128-129,132,142,共4页
Shandong Coal Science and Technology
关键词
瓦斯抽采
封孔材料
配比改进
封孔工艺
gas drainage
sealing material
proportioning improvement
sealing process
