倾斜厚煤层放煤规律及参数研究

STUDY ON SUBLEVEL CAVING LAW AND PARAMETERS IN INCLINED THICK COAL SEAM

根据倾斜厚煤层放顶煤开采的特点，应用相似材料模拟、现场观测与数学分析方法，提出了适合放顶煤开采的两阶段依次放煤方式和倾斜厚煤层一次全量放煤时的下行放煤顺序，建立了求解放煤参数的数学模型．结果表明，煤层倾角对放出体的影响随其高度的增加而减小，对放煤参数的影响较小；

According to the extracted features of inclined thick coal seam with sublevel caving and based on the methods of similar material simulation,field observation and mathematic analysis, the two stages sequential drawing manner adapted to the sublevel caving and the downward coal drawing order adapted to the inclined thick coal seam are present, and the mathematic model to solve for drawing parameters is built up.The result shows that the inclination of coal seam has reverse effects to the draw body height and less effect to the drawing parameters. The final residual angle of coal drawing is the main factor affecting the drawing parameters.