千米深井掘进工作面冲击地压防治技术

Prevention and Control Technology of Coal Burst at One Kilometerdepth Driving Face

通过对掘进工作面的煤岩冲击倾向性、埋藏深度、顶板特性、底煤厚度和地质构造等冲击地压影响因素进行分析,得出高家堡煤矿一盘区回风大巷已经具备了发生冲击地压的条件。因此,在巷道掘进中通过实施大直径钻孔卸压和爆破解危措施开展了冲击地压预防和控制技术的研究工作,并通过钻屑法对防冲效果进行了检验,结果表明:卸压后,各巷道煤粉量均未超标,确保了掘进工作面的安全生产。

Through the analysis of the coal and rock burst tendency, mining depth, rooI strata properties, floor coal thickness, and geological structure in driving face, the main return way of No.1 panel in Gaojiabao mine have satisfied the essential ~equirements for occurrence of coal burst. Therefore, through the implementation of pressure relief and danger releasing measures, to carry out the study on the prevention and control technology of coal burst, and then, the method of drilling slack was used to measure the prevention effects of coal burst, the results showed that quantity of coal dust was below the related technical standards; to ensure the safety production of the driving face.