Abstract: In this paper, to study the mechanism of rock burst in hard rock roadway of deep mine, combined with the engineering practice of rock burst in basalt area of Datai Mine , the characteristics of regional tectonic stress field is analyzed, and the elastic energy distribution characteristics of coal-rock body in this area is studied. Meanwhile, in the view of the tectonic stress and energy, both the stress and energy conditions of roadway surrounding rock with burst tendency are further studied when rock burst happening. The results show that the happening of rock burst must be satisfied with the stress and energy conditions simul-taneously when excavating roadway in rock mass with burst tendency, and the rock burst location and intensity are related to the direction of maximum principal stress. The research results in this paper will offer theoretical basis to the rock burst prevention, horizon roadway layout in deep mining, and roadway supporting, et al, in Datai Mine.

Key words: rock burst, basalt, tectonic stress field, tectonic stress, elastic energy