0.概述竖井工程开挖从目前水电系统常用的方法讲,一般先打竖导井,很少全断面正井法开挖。竖导井有两种施工方法:一种是正导井施工法;另一种是反导井施工法。都是先打成竖导井以后,在从上往下扩挖,井渣从遂洞运走。1.导井开挖方式有反井钻机的竖导井开挖,是先用反井钻机打竖导井,导井直径 0. Overview Shaft excavation from the current method of hydropower system commonly used method, the general first hit vertical wells, very few full-face normal method of excavation. There are two kinds of vertical well construction methods: one is the positive guideway construction method; the other is the anti-guide shaft construction method. After they were all labeled as vertical wells, dredging was expanded from above and the well slag was transported away from the tunnel. 1. Guide way of excavation Raise the vertical well drilling rig, is the first use of anti-drilling rig vertical shaft, guide diameter