煤矿开采岩层移动的相似模拟实验及数值分析

采用相似模型和数值分析,对倾斜煤层的开采沉陷及地表移动进行了探讨。根据相似原理进行了相似模拟实验研究;采用2D-σ有限元计算程序对岩层移动及开采沉陷进行了数值分析。得到了倾斜煤层在倾向方向上移动盆地对地表的影响范围、最大下沉点位置,地表下沉曲线,以及该煤矿的下沉系数、水平移动系数、最大下沉量,所得结果对矿井的延深设计及灾害预测具有实际的指导意义。

Modeling Experiment and Numeric Analysis on Strata Movement in Coal Mine

In this paper, study was made on the mining subsidence and surface movement during extraction of inclined coal seam on the basis of the similarity model and numeric analysis. The modeling experiments were conducted according to the theory of similarity. Numeric analysis was made on the strata movement and mining subsidence with 2D-骹inite element computational program. Some parameters are thus obtained on the analysis results including the affected range of surface by the basin during the movement of inclined seam in the dip direction, the location of the maximum subsidence point, surface subsidence curve as well as the subsidence factor, horizontal displacement factor and maximum subsidence of the mine. All of these results have actual guiding meanings for the deepening design and disaster prediction of the mine.