The main ore-pass plays an important role in the entire mine transportation system.The mine ore-pass is generally subject to wear and collapse. The impact load caused by the ore movement in the non-storage section is one of the main reasons for the damage of the ore-pass wall. In order to reduce the impact and wear damage of the ore flow on the ore-pass, a new type structure of mid-stream pillar was proposed. Based on the analysis of ore movement theory and the similar simulation experiment of ore-pass unloading, the research on the impact and wear of the ore flow in the non-storage section of ore-pass was carried out. Based on the granular kinematics, the collision recovery coefficient of ore trajectory was calculated, and characteristic equation and characteristic curve of ore movement in the straight and mid-stream pillar section of ore-pass were obtained respectively. The collision position and the wear pattern of the ore-pass model were obtained through the similar model test. The collision area distribution and impact and wear degree of the two types of ore-pass structure under the impact of ore flow at the same unloading angle (44°) were compared and analyzed. The analysis results show that the mid-stream pillar ore-pass structure can effectively change the ore flow trajectory and reduce the impact and wear on the ore-pass wall. The new type structure of mid-stream pillar can be applied to new ore-pass, combining key protection measures near the impact location, which can effectively reduce the impact and wear on the ore-pass wall, and can prevent and control the ore-pass collapse.