一盘区首采工作面冲击危险性分析与探讨

Analysis and Discussion on Impact Risk of the First Mining Face in No.1 Panel

A矿开采的4#煤层具有强冲击倾向,在工作面开采过程中可能会引发冲击地压的问题。建立力学模型,通过对开采深度、煤岩冲击倾向性、顶板岩层条件、断层构造、褶曲构造、煤柱宽度等冲击地压影响因素进行分析,得出1141工作面回采期间发生冲击地压或矿震的可能,并对工作面冲击危险区域进行了划分,对回采期间冲击地压的防治起到了积极作用。

The 4#coal seam of A Coal Mine has strong impact tendency,which may cause the problem of rock burst in the mining process of working face.Establishing mechanical model,based on the analysis of mining depth,coal rock impact tendency,roof rock conditions,fault structure,fold structure,coal pillar width and other impact rock pressure influencing factors,it was concluded that there is the possibility of impact rock pressure or mine earthquake during the mining period of 1141 working face,and the impact risk area of the working face was divided,which plays a positive role in the prevention and control of impact rock pressure during the mining period.