Abstract: West mining area of Rongguan mining will switch to pillarless sublevel caving method in mine recovery under ▽1 158 level. In order to ensure the smooth progress of projects, the 6 gobs in ▽1 158 level should be eliminated and to form covers. According to typical gob, using ANSYS software to analysis the stability of gobs, combining with spot conditions we propose the similar VCR method. Drawing on experiences in handing previous goaf, detonate explosive depending on designed blasting parameters. The results show that similar VCR method is sensible and successful.

Key words: goaf, similar VCR method, stability analysis, caving engineering, blasting parameter