Abstract:
The 962 working face is the first coal face of the 9
# coal seam in 86 mining district in Haizi Coal Mine. In order to research the strata behavior of the working face, strata behavior observation is carried out in 962 working face, the article analyzes the laws of strata behavior of fully mechanized working face, support load distribution and running condition, the law of the abutment pressure distribution and damaged characteristics of surrounding rock through observing the pressure appearance in the course of the mining for close distance coal seams. The results show that the pressure is different along with the tilt direction in 962 mining face; the pressure strength is small and a longer duration when it affected by the 762 working face mining. Meanwhile, the results of strata behavior observation show that the movement and deformation of tunnel surrounding rock is still limited, the existing supporting can meet the requirements of safe mining.