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目前掘进竖井井筒(井身段)使用大功率的联合掘进机组能保证较高的技术经济指标,装载机械化水平可达95.5～99.8％,钻炮眼的机械化水平达36.1～86.8％。而当在井身段一般以50～60m/月的技术速度掘进时,整个井的掘进速度却不超过20m/月,这是由于迄今在建造井筒(从装备井颈段掘进机械进行掘进到重新装备以便完成井身段的建设)的工作没有实现综合机械化。结果,目前与装备凿井设备有关的工作需要消耗9～18个月,1000m深的井筒掘进要12～18个月,建造锁口井颈要1.5～2个月。 锁口和井颈建造期较长,说明其施工工艺和施工机械化方面存在严重的缺点,导致手工劳动量增
At present, the use of high-power joint boring units for tunneling shaft shafts (shaft sections) can ensure high technical and economic indexes. The loading mechanization level can reach 95.5-99.8% and the mechanized level of drilling holes can reach 36.1-86.8%. When the wellbore is normally drilled at a technical speed of 50-60 m / month, the entire well is driven at a speed of no more than 20 m / month due to the fact that so far the wellbore has been constructed (from tunneling to re-equipping In order to complete the well bore section construction) did not achieve comprehensive mechanization. As a result, the current work related to rigging equipment needs to be completed within 9 to 18 months. The borehole excavation at a depth of 1000 m takes 12 to 18 months and the lock neck is constructed for 1.5 to 2 months. The long construction period of the lock port and the well neck shows that there are serious shortcomings in the construction technology and construction mechanization, resulting in the increase of manual labor