极近距离煤层煤柱集中应力在底板中传递规律研究

Study on Transfer Law of Concentrate Loading of Pillar in Contiguous Seams

根据弹性力学理论,建立了覆岩非充分垮落时均布条形载荷下的应力分布计算模型,并推导出不同宽度煤柱下不同位置处的垂直应力分布计算公式。基于有限元计算方法,结合付村煤矿实际地质条件及开采工艺,建立了数值计算模型,用FLAC3D软件模拟了不同宽度煤柱下应力传递规律。

Based on the theory of elastic mechanics, the stress distribution calculation model under the strip uniform load in the insufficient mining stage is built, and the formula of stress distribution of different locations with different coal pillars width is deduced. Combining mining geologic condition with production practice of Fucun mine, using the finite element calculating method, the numerical calculation model is established. FLAC3 Dis used to simulate stress transfer rules with different coal pillars width.