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采用突出煤和阻挡层组成的延期突出模型,对延期突出事故的认定进行了探讨。结果表明,打钻、手镐、清煤(或矸石)、维修巷道、支护等作业过程中发生的突出应归类为延期突出,突出发生前无作业条件下发生的突出也属于延期突出。2007年至2016年间,延期突出次数占煤与瓦斯突出总次数的比例为19%,延期时间最短的为42 min,打钻过程中延期突出发生次数最多。
The model of delaying protrusion consisting of protruding coal and barrier is adopted to discuss the identification of the extension accident. The results show that the prominence during the drilling, hand pick, clean coal (or gangue), maintenance of roadway, support and other operations should be classified as delaying prominence, prominence prominently occurred before the non-operating conditions also belong to the extension of outstanding. From 2007 to 2016, the number of deferred outstanding projects accounted for 19% of the total number of coal and gas outbursts, the shortest delaying time was 42 minutes and the delaying and striking occurred most frequently during drilling.