新旧井筒交叉处掘进及支护技术研究

Study on the Tunneling and Support Technology at the Intersection of Old and New Wellbore

随着沁水煤田3#煤资源逐渐枯竭,下组煤延深开采将成为主要开采方式,进行井田开拓布置时,如将井筒布置在原有3#煤井口位置上,可充分利用已有的工业场地建筑,减少占地与压煤。结合望云煤矿下组煤水平延深项目井筒选址及施工方案,对新旧井筒交叉处掘进及支护形式进行了研究,该研究对斜井井筒掘进具有一定借鉴意义。

As the3#coal resources of Qinshui Coalfield have gradually dried up,extension mining for under-group coal seam will be the main method of mining.If the wellbore is placed in the position of the original3#coal well during laying out the well development,existing industrial site construction can be fully used and occupation of land and compressed coal can also be reduced.This paper studied tunneling and support form at the intersection of old and new wellbore combined with wellbore siting and construction scheme of horizontal extension projects for under-group coal seams in Wangyun Coal Mine,and the research is of reference significance to the drilling of inclined shafts.