Abstract: Abstract :The utilization of drilling technologies and devices are the most effective and directly method of preventing occurs of water disaster in coal mining. Based on the development status of tunnel drilling rig, the features and functions that should be capacitated by crawler directional draw-off drilling rig and its accessory equipments are researched according to the crafts and technologies characteristics of draw-off in coal mining. Its plays a certain guiding role for improvement of mine-water prevention and the development of key technologies and devices.

Key words: Water Disaster, Drilling-Off, Directional Drilling