<p>Deep rock masses are prone to rockburst of varying degree and type because they are usually subjected to high in situ stress and ground temperature, as well as disturbance due to engineering activity. The mechanism by which rockburst are developed, and lead to disaster, thus seriously threatening the safety of construction personnel, is extremely complicated. In this study, biaxial loading tests were conducted on heat-treated granite rock samples prefabricated with circular holes in order to induced multiple rockbursts. The characteristics of the macroscopic damage caused, debris formed, and acoustic emissions (AE) produced were subsequently analyzed. The total duration of multiple rockbursts after temperature treatment is 1.79 ~ 2.8 times shorter than that at normal temperature. The spatial evolution of the multiple rockbursts typically extended in two directions (axial and radial) and was influenced by the temperature treatment of the rock. The temperature used in the heat treatment process had a significant effect on the characteristics of the rockburst process. When the temperature was increased, the multiple rockbursts became more intense and the ejected debris was also more fragmented. At the same time, the maximum absolute energy of the AE released by the rock samples fluctuated and increased. The fractures formed during the development of multiple rockbursts are mainly tensile and tension-shear fractures, and a small number of shear fractures are also produced. The research results provide a useful reference for the stability analysis of the surrounding rock and the optimization of the support strategy of the deep tunnel.</p>