浅埋煤层厚积砂薄基岩顶板破断机理研究

RESEARCH ON MECHANISM OF ROOF OF THICK SANDSTONE AND THIN BASE ROCK BREAK ABOVE SHALLOW COAL SEAM

本文在物理相似模拟和数值模拟的基础上,通过对神东集团薄基岩浅埋煤层开采的研究,建立了上覆岩层的梯度复合板力学模型。利用承压砌块模型分析了周期来压过程,并给出了初次来压和周期来压机理。

In this paper, based on physics resemble simulation and numerical simulation, gradscomposite board mechanics model on overlying strata was obtained by studying shallower coal seam mining under thin base rock in SHENDONG GROUP.Periodic weighting was analysed by the bearing wedge model, simultaneity,the mechanics of first weighting and periodic weighting were expounded.