深井工作面侧巷回采期动力显现特征与防治技术

Dynamic Characteristics and Prevention and Control Technology of Side Roadway in Deep Mine Working Face during Mining Period

结合4137西下工作面具体地质情况,分析影响工作面回采期间侧巷(运输巷道、回采巷道)动力显现因素,确定巷道动力显现特征并划分危险程度:4137西下工作面回采期间具有11处动力危险区域,其中具有强动力显现的区域有2个,中等动力显现区域有5个,其他区域为弱动力显现区域;基于上述工作面情况特征,为有效防治巷道动力显现特征,在回采前期及回采期间均实施针对性的防治措施;经现场开采表明,4137工作面回采期间基本无动力显现,防治措施有效实践。

Combined with the specific geological conditions of the 4137 west lower working face, the factors affecting the dynamic behavior of the side roadway( transportation roadway, mining roadway)during the mining period of the working face are analyzed, and the dynamic behavior characteristics of the roadway are determined and the risk degree is divided: there are eleven dynamic risk areas during the mining period of the 4137 west lower working face, of which there are two areas with strong dynamic behavior, five areas with medium dynamic behavior, and other areas are areas with weak dynamic behavior;based on the characteristics of the above working face, in order to effectively prevent the dynamic behavior of roadway, targeted prevention and control measures are implemented in the early mining and mining period;the field mining shows that there is no dynamic appearance during the mining of 4137 working face, and the prevention measures are effective.