(1. College of Energy and Safety，Anhui University of Seience and Technology，Huainan，Anhui 232001，China；
2. Key Laboratory of Coal Mine Safety and High Efficiency Mining，Ministry of Education，Anhui University of Science
and Technology，Huainan，Anhui 232001，China)
Abstract：Based on the problems of the gateway of a mine of Huaibei mine area controlling surrounding rocks and different characters of tunnel surrounding rocks，management models and key technology were classified by coal seam types and whether driven along goaf or not that in premise of figuring out its feature and mastering failure reasons for supporting. Changes of deformations and stresses between before and after in two types of gateways is compared by numerical simulations during classification management. It was found that deformations of gateways surrounding rocks after classification management reduced greatly；and the stress levels of surrounding rock were significantly improved. Lastly，key technologies were applied to engineering practice. The practical result shows that deformations of gateways surrounding rocks were effectively controlled after classification management than those before classification management. The research results can be references for gateways surrounding rocks management under similar conditions.
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2012, Vol. 31 
