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以陕西彬长矿区某煤矿40111综放工作面为背景,按照实际的地质条件和回采情况对其回采循环过程中的矿压规律进行了FLAC数值模拟,编制了矿压规律现场监测方案。实际观测结果表明,40111工作面初次来压步距在83.3～100.8 m之间波动,顶板初次来压步距大约为91.2 m,周期来压在40～65.6 m之间波动,周期来压步距平均为55.5 m。
Taking the 40111 fully mechanized caving mining face of a coalmine in Binchang Mining Area of Shaanxi Province as background, FLAC numerical simulation of the rock pressure in the process of mining and reclaiming was carried out according to the actual geological conditions and the conditions of mining, and a site monitoring program was established. The actual observation results show that the initial pressure step spacing of 40111 working face fluctuates between 83.3 ~ 100.8 m, the initial pressure step of roof is about 91.2 m, the cycle pressure fluctuates between 40 ~ 65.6 m, and the cycle pressure step The average is 55.5 m.