【摘要】 在综放条件下由于上覆岩层直接顶岩性的不同,在直接顶的垮落过程中可能会形成不同的顶板结构。结合某一矿井的地质条件,对直接顶垮落形成散体拱结构的现象进行了物理相似模拟研究,研究认为直接顶垮落流动的过程中,在某一瞬间产生了散体拱结构形成的合适的力学平衡条件,从而在上位直接顶形成了散体拱结构。更多还原

【Abstract】 Under the condition of the fully mechanized caving and mining,due to the different rock properties of the direct roof in the coal mining face,the direct roof in the above overburden in the falling process will form different roof structures.In combined with the geological conditions in a coal mine,a physical similar simulation research was conducted for the phenomenon of the bulk arch structure formed from the direct roof falling.The paper held that during the direct roof falling and moving,a suitable mechanics balance condition formed by the bulk arch structure occurred in a moment could form a bulk arch structure above the direct roof.更多还原