Kai Xie, male, born in 1998, is a Ph.D. candidate, is mainly engaged in the research of mine collapse body, rock mechanics, and discrete element numerical simulation. In the past 5 years, he has presided over and participated in 4 longitudinal scientific research projects such as the National Natural Science Foundation of China and the Natural Science Foundation of Heilongjiang, participated in more than 10 horizontal scientific research projects such as the research on the movement law of overburden in the 2201 deep mining face of Shaozhai Coal Mine, the research on the mechanism and control technology of the topping of the large mining face in the fold structure area, the identification of gas grade in the Tuanjie Coal Mine, and the detection of transient electromagnetic method in the Hongyun Coal Mine, and published 5 academic papers and authorized 2 patents.