熊洞湾隧道平导揭C5煤层施工技术

Construction Technique for the Pilot Tunnel of the Xiongdongwan Tunnel Exposed C5 Coal Seam

熊洞湾隧道出口段揭煤施工,是本隧道的重大危险源之一,共包括5个煤层共8条煤线,其中C5煤层是几个煤层中危险性最大的煤层。结合前几个煤层的施工经验,运用超前钻孔探测对熊洞湾隧道出口煤层危险性进行了预测,同时严格按照相关技术方案进行揭煤施工,最终顺利通过了C5煤层,为今后揭煤施工奠定了良好基础。

The construction of the exposed coal seam at the exit of the Xiongdongwan tunnel is a source of significant risk regarding the construction of this tunnel. There are 5 coal seams totaling 8 coal lines, with the C5 coal seam being the most dangerous one. Based on construction experiences with previous coals seams, advance drilling was used to explore the coal seam at the exit of the Xiongdongwan tunnel and the construction of the exposed coal seam was undertaken in strict accordance with relative technical proposals and ultimately passed smoothly through the C5 coal seam.