Abstract:

Abstract: Theoretical analysis and engineering exploration are adopted to study the relationship of roof water-gushing and roof movement law. The results show that stope roof breaking movement has spread to the upper aquifer, the gush source in the working face mainly was gritstone fractrure water; Emission of water from sandstone roof has a periodic fluctuation law and a good consistency with the roof rupture instability with the face-advancing, fracture of roof caused overlying strata water flow and mutation, in addition, emission of water also relate to water abundance of the roof. According to the water abundance and buckling and breaking rules of the roof, water gush of the roof can be predicted and controlled.

Key words: water gush of the roof, movement of the roof, influence law