Vertical feeding of large-diameter borehole is the key link to realize high-efficiency transportation of solid bulk filling in coal mine to underground well. The drop hole of pre-construction of Xingdong Mine meteorite filling is more than 760 m, and the drop of hole drop in China is the largest known. It is still necessary to further explore the feasibility of the injection of holes in the large vertical depth of Xingdong Mine, and the prevention of pipe plugging and how to solve the problem of excessive impact on the lower hole of the hole. In recent years, there have been no fewer than 10 coal mine applying large boreholes in China. However, due to the large drop in the placement holes, laboratory conditions were difficult to simulate the authenticity of the feedstock, resulting in less research on the technology by relevant domestic research institutions. Based on the actual production and theoretical analysis of relevant domestic coal mines, the general operating states and laws of the materials such as vermiculite in the hole were discussed, and the countermeasures for related problems were found out, which provided scientific and theoretical basis for the construction of deep hole feeding system in Xingdong Mine and similar mines.