荣泰矿上组煤蹬空开采可行性研究

Feasibility study on mining above hollow upper group coal seam of Rongtai Mine

荣泰矿现采煤层资源临近枯竭,为了缓解采掘接替紧张,高效利用上部遗留煤炭资源,延长矿井服务年限,采用比值判别法、"三带"判别法和围岩平衡法,对上组煤蹬空开采可行性进行了研究,结合实际情况,分别从煤层间距、层间结构及岩性、煤层厚度、采煤方法、时间间隔、煤层倾角等几个方面进行了研究分析,结果表明,该矿满足上行蹬空开采的各项条件,上组煤可安全开采,预计可延长矿井服务年限2.9 a,创造经济效益5.2亿元。

In order to relieve the tension of extraction and succession,efficiently utilize the remaining coal resources in the upper part of the mine and extend the service life of the mine,the feasibility of the upper group of coal stirrup mining has been studied using the ratio method,the"three-band"method and the perimeter rock balance method.Combined with the actual situation,the coal seam spacing,interlayer structure and lithology,seam thickness,coal mining method,time interval,coal seam dip angle were taken into account.The results showed that the mine met the conditions of upper group coal seam mining,the service life of the mine was expected to be extended by 2.9 years,creating economic benefits of 520 million yuan.