井下采用湿式凿岩有一定的局限性。因为风钻工进行干式开眼或凿岩时水量不足,以及打到一定深度后,钻杆中心孔压气形成的气泡离孔后破裂,都会使粉尘悬浮在空气中。对于湿式凿岩曾采取过多种改进措施,以便更加有效地利用水和控制压气。为开眼防尘使用了风水联动开关,并进行水压控 Downhole wet rock drilling has some limitations. Because the wind drillers dry open or drilling water when the lack of water, and hit a certain depth, the center hole of the drill pipe pressure gas bubble rupture from the hole, will make the dust suspended in the air. There have been a number of improvements to wet rock drilling to make more efficient use of water and control of the pressure. Dust used for the open eye Feng Shui linkage switch, and water pressure control