中国矿山工程

Rock burst is a sudden dynamic disaster in the process of underground construction, which poses a serious threat to the safety of personnel and equipment. Based on the construction area of a drainage roadway in a copper mine in Xizang Province, this paper applied indoor uniaxial compressive strength test, Brazilian disc splitting strength test, loading and unloading test to obtain the rock physical and mechanical characteristics of the construction area. The composite rock burst prediction of rock at different locations and buried depths is carried out by using four rock burst criteria, namely linear elastic index criterion, strength brittleness index criterion and deformation brittleness coefficient criterion. The conclusion shows that the rock burst tendency in the construction area is weak rock burst tendency and no rock burst tendency, and the rock burst occurrence probability is small and the degree is slight. Rock burst disaster can be prevented and controlled by adopting general support measures in the construction process of drainage lane. The rock burst prediction analysis based on multiple rock burst tendency criteria provides a theoretical basis for rock burst disaster prevention in the construction area of drainage lane.