“三软”煤层高应力动压区巷道掘进与支护技术

"Three Soft" Seam Zone of High Stress Dynamic Pressure Tunnel Boring and Support

在"三软"煤层高应力动压区内掘进施工时,矿山压力进一步增大,顶板管理困难,通过采用提前注水预控顶板、可缩性支架+矿工钢刚性支架联合支护的施工方式掘进,使巷道安全、快速掘进,保证了矿井采掘接替。

The ＂three soft＂ high stress dynamic pressure coal excavation of the area, further increasing pressure on the mine, roof management difficulties, through the use of water injection early precontrol roof, retract- able steel stent ＋ miners rigid stent combined support of the construction methods Boring, roadway safety, fast tunneling to ensure that the mining shaft to succeed.