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为揭示厚松散层矿区采动影响下上覆岩土体双层介质移动机理,对厚松散层下采煤岩土体的沉陷规律进行了模拟研究,并用实测资料进行验证。试验得出了厚松散层矿区采动影响下岩土体沉陷规律,并与一般条件下开采沉陷规律进行比较,指出松散土体沉陷规律有其特殊性。通过对岩土体沉陷值和采动程度的比较,表明了基岩体对地表沉陷的控制作用,阐述了基岩面移动盆地和地表移动盆地的差异性,揭示了采动影响下岩土体移动机理,为厚松散层矿区沉陷预计、受护物防护及矿井安全高效开采提供一定的参考依据。
In order to reveal the mechanism of double-layer medium movement of overburden rock under the influence of mining in thick loose seam mining area, the subsidence law of coal and rock mass under thick loose layer was simulated and verified with measured data. The result shows that the law of rock and soil subsidence under the influence of mining in thick loose seam mining area is compared with the law of mining subsidence under normal conditions. It is pointed out that the law of loose soil subsidence has its own particularity. By comparing the subsidence value and the mining degree of the rock mass, the control effect of bedrock mass on the subsidence is demonstrated, and the difference between the basement and the surface movement basin is expounded. It is revealed that the rock mass under the influence of mining The mechanism of movement is predicted for the subsidence of loose and loose mining area, which will provide some references for protection of protective material and mine safety and efficient mining.