急倾斜厚煤层顶板运动规律与柔性掩护支架受力分析

Roof moving regulation of steeply pitching thick coal seam and mechanics analysis of flexible type shield

应用 RFPA2D模拟软件,分析了柔性掩护支架侧向放煤开采过程中,急倾斜厚煤层顶板运动规律,研究结果与放出椭球体理论研究结果具有很好的一致性;模拟了柔性掩护支架在不同的开采状态下,支架的受力状况和应力变化规律、煤体的应力变化和破坏情况,为安全、高效、合理地应用侧向放煤技术开采急倾斜厚煤层提供依据。

In this paper, RFPA2D software is used to research sublevel caving procedures of flexible type shield and the roof moving regulation of steeply pitching thick coal, the research results conform to the drawing ellipsoid theory; In addition, the force situation and stress changing regulation of flexible type shield, the stress changing regulation and failure statues of coal are simulated under different mining situations, which can give support for the safe, efficient and reasonable coal mining of steeply pitching thick coal with sublevel caving technology.