沿涌副立井施工过急倾斜突出煤层

Ways to Pass Steeply Inclining Outburst Seam in Construction of Auxiliary Vertical Shaft in Yanyong Colliery

乐平沿涌副立井井筒施工采用先探后掘、大口径群孔排放、分段预测、排放和效检、分段震动爆破、分次揭煤、一次成井等综合防突措施,顺利通过急倾斜突出煤层。

During the construction of auxiliary vertical shaft, Yanyong Colliery employs many gas outburst preventive methods including excavation after probing, large aperture group holes emission, subsection forecasting, emission and efficacy, subsection shaking dynamite, gradationally uncovering coal seam and shaft formation in a lump, which make it possible to pass the steeply inclining outburst seam smoothly.