Abstract: In view of failure problems of Chagannaoer No.1 well, according to the methods of theoretical analysis, lab experiments, field monitoring and numerical analysis, combined with a variety of research methods, we reveal the causes of large deformation and failure; and with the help of finite element numerical simulation software MIDAS/GTS, we explore the different support schemes of roadway, finally, bolt + grouting + roof and floor anchor + steel + spray lining for controlling large deformation of the roadway has a significant effect.