Abstract：The deformation-failure process and the influence factors of anti-dipped mountain above goaf are complex, and it is very difficult to prejudge the stability of the mountain. The current status of rockfall and landslide geo-hazards triggered by goaf were studied, and their engineering geologies were analyzed. The mining failure effects on anti-dipped mountain were divided into five stages as follows: deformation of the anti-dipped slope, response of mining load, adjustment of mining-induced stress, failure evolution of the anti-dipped mountain, and integral failure of the anti-dipped mountain. According to the results of engineering geological analyses, a geomechanical model of anti-dipped mountain was established. The stability criterion of anti-dipped mountain was deduced by the limit equilibrium method with cantilever beam theory. Finally, the universal distinct element code (UDEC) was used to simulate the deformation-failure characteristic of this type of mountain, and the correctness and applicability of the stability criterion were verified.

Keyword：anti-dipped mountain;goaf;failure effect;stability criterion;