Abstract: Based on the special conditions of the near-vertical coal seam and the technical conditions of horizontal sectional mining, a mechanical model of the clamping beam is established, a brief analysis is made on the dynamic and dynamic capacity of the induced impact. Based on the analysis results, the dynamic response characteristics of coal stress, displacement and other dynamic characteristics of the working face of near-vertical strata under dynamic load are studied by means of FLAC3D, the mechanism of rock-burst is revealed. Results show that the mining field is affected by the vibration of the external rock mass under static load stability, the mining face below horizontal stress instantaneous sharply lower after rising first, vertical displacement has increased suddenly, its balance is broken, cause rock-burst. The research results show the impact mechanism and the prevention and control of the horizontal sectional mining of near-vertical coal seam.