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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。
The construction of the secondary vertical shaft along the Yongping Leping adopts the methods of first exploration and after excavation, large-bore population discharge, sub-stage prediction, discharge and efficiency inspection, sub-stage vibration blasting, sub-block coal uncovering and once well completion and so on. Prominent coal seam.