煤矿安全2017，Vol.48Issue(7)：74-77,4.DOI:10.13347/j.cnki.mkaq.2017.07.019
顺层钻孔“三堵一注”封孔工艺的研究及应用
Research and Application of "Three Sealing and One Grouting" Sealing Technique of Boreholes Drilled Along Seam
马强1
作者信息
- 1. 山西天地王坡煤业有限公司,山西晋城048021
- 折叠
摘要
Abstract
According to 3316 auxiliary air return roadway of Wangpo Mine,FLAC3D numerical simulation software is used to analyze the stress and strain characteristics of supporting roadway,and the reasonable hole sealing depth is not less than 15 m,and then the three sealing and one grouting sealing technique is optimized.After the comparison and analysis of two sealing and one grouting,the research show that the total and the maximum average concentration of extraction drilling of three sealing and one grouting increased by 9.5％ and 16.5％ than that of two sealing and one grouting,and the concentration of extraction is as high as 40％ after the boreholes has been extraction for 70 days.So the three sealing and one grouting sealing technique can effectively improve the efficiency of gas drainage.关键词
数值模拟/封孔深度/三堵一注/瓦斯浓度/瓦斯抽采Key words
numerical simulation/hole sealing depth/three sealing and one grouting/gas concentration/gas drainage分类
矿业与冶金引用本文复制引用
马强..顺层钻孔“三堵一注”封孔工艺的研究及应用[J].煤矿安全,2017,48(7):74-77,4.
