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25年来,天井钻机已得到卓有成效的应用,目前天井钻进法实际上已取代了手工掘进法。天井钻机与全断面隧道掘进机几乎是同时发展起来的。现在已有许多种机型可供选择应用。下表列出了几个主要厂家生产的各种天井钻机的基本特性。天井钻机通常是在地下矿山的两个水平之间或者从地表向井下一个水平先钻进导孔,然后在上部水平或者在地表由通过导孔的钻管向上拉扩孔刀头沿导孔扩钻成天井。
Over the past 25 years, patio drilling rigs have achieved fruitful results. At present, the well drilling method has actually replaced the manual excavation method. Paver rig and full-face tunnel boring machine is developed at almost the same time. Now there are many kinds of models to choose from. The following table lists the basic characteristics of various wellhead rigs produced by several major manufacturers. The well drilling rig usually first drills the pilot hole between two levels of the underground mine or one level downhole from the ground surface and then draws the pilot hole along the pilot hole at the upper level or on the surface by the drill pipe passing through the pilot hole Drilled into the patio.