厚煤层综放工作面矿压显现规律模拟与现场实测

Strata Behavior Simulation and Field Measurement for Fully Mechanized Mining Face in Thick Seam

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 40111 fully mechanized caving face of a coal mine in Shaanxi Binchang Mining Area as the background,the study made mine pressure law simulation during the mining cycle process by FLAC according to the actual geological condition and the extraction conditions,and compilied field monitoring scheme of mine pressure law.The observed results show that the first weighting interval of 40110 face was 83.3~100.8 m,the first weighting interval of roof was about 91.2 m,periodic weighting interval was 40~ 65.6 m,the average value of periodic weighting interval was about 55.5 m.