Abstract: Abstract: Based on the surface of steep coal seam mining may cause cracks and steps, collapse pits or collapse basins, etc, this paper propose the prevention and control technical measures, such as, coal seam outcrop governance, underground tunnel governance and pillar reinforcement, etc. The results show that the prevention and control technical measures can reduce the damage to the influence of the surface of steep coal seam mining, effectively prevent the occurrence of mine flooding accident, in order to provide the ideas and methods to solve the similar problems.

Key words: Key words: Steep coal seam, crack and step, collapse pit, collapse basin, the prevention and control technical measures