文献类型：期刊文献

中文题名：巷道“三带”分布与瓦斯抽采钻孔封孔深度计算

英文题名：Distribution of"Three Zones"in Roadway and Calculation of Sealing Depth of Gas Drainage Borehole

作者：郑伟 张仁松 张际涛

第一作者：郑伟

机构：[1]贵州理工学院,贵阳550000;[2]贵州致远工程技术咨询有限公司,贵阳550000

第一机构：贵州理工学院

年份：2021

卷号：40

期号：7

起止页码：122-125

中文期刊名：煤炭技术

外文期刊名：Coal Technology

收录：北大核心:【北大核心2020】；

语种：中文

中文关键词：巷道;三带;钻孔;封孔深度;计算

外文关键词：roadways;three zones;borehole;sealing hole depth;calculation

摘要：为了计算瓦斯抽采钻孔合理封孔深度,根据巷道钻孔窥视及数值模拟实验,总结出巷道“三带”的分布与巷道的宽度和高度相关,其规律为松动破碎带为巷道外接圆半径的2倍,集中应力带为巷道外接圆半径的1倍,巷道外接圆半径的3倍以外为原始应力带;通过相关研究结果验证,该规律符合实际;结合有关研究,得出瓦斯抽采钻孔合理封孔深度为巷道外接圆半径的3倍。
In order to calculate the reasonable sealing depth of gas drainage borehole,the experiment of peeking and numerical simulation according to the tunnel drilling,the distribution of"three zones"in roadway is related to the width and height of roadway.The regularity is that the loose fracture zone is 2 times of the circumscribed circle radius of the roadway and the concentrated stress zone is 1 times the radius of outer circle and 3 times the original stress zone;through the related research result verification,the law is in line with reality;in conjunction with relevant research,the reasonable sealing depth of gas drainage borehole is 3 times of the circumscribed circle radius of roadway.