Abstract:Non-explosive destressing curtain is an important way to relieve danger for the remnant pillar with high stress and high risk at depth. However, there are still some problems, such as unclear formation mechanism and mechanical action. In this paper, the distance between the inner holes of the row is optimized by theoretical analysis, and the model of the non-explosive destressing curtain and the explosive slot curtain is established by using numerical simulation method. The equivalent mechanical effect of non-explosive destressing curtain at depth is explored by comparing and analyzing the stress field and broken instability zone of the non-explosive destressing curtain and the explosive slot curtain. The results show that the non-explosive destressing curtain has a high consistency with the explosive slot curtain in the distribution of stress field and broken instability zone, and has obvious mechanical equivalent effect. The research results can provide theoretical support for the relief of serious rockburst stope under similar conditions.