放矿理论的移动体体形及表面过渡关系研究

Research on the Transition Relationship of the Morphology and Surface of Movement Body in Drawing Theory

崩落采矿法在覆岩下放矿,放矿理论是控制其损失贫化指标的理论基础,放矿理论中的移动体体形和表面过渡关系则是放矿理论建立的基础。在分析椭球体放矿理论和类椭球体放矿理论的移动体体形和表面过渡关系的基础上,比较了二者的放出体体形、等密度体(表面)形状和等速度表面形状,论证了放出体表面、等密度面及等速度面的过渡关系,研究发现放矿时实质存在3种移动体(面)、3种体形和3种过渡关系。研究结果理清了放矿理论中的移动体体形和表面过渡关系,进一步夯实了放矿理论的基础。

Drawing is done under the overlying rock by adopting caving method,drawing theory is theoretical basis of controlling its dilution and loss indexes,which is established based on the transition relationship of the morphology and surface of movement body. Based on analyzing the transition relationship of the morphology and surface of movement body of the ellipsoid drawing theory and quasi-ellipsoid drawing theory,the morphology of the drawing body,isopycnic（ surface） shape and isovelocity surface shape of the the ellipsoid drawing theory and quasi-ellipsoid drawing theory,the transition relationship between drawing body surface,isopycnic surface and isovelocity surface is discussed in detail. The study results show that there are three movement bodys（ areas）,three shapes and three transition relationships when drawing. The results clarified the movement body morphology and surfaces transition relationship in drawing theory,and the foundation of drawing theory is further consolidated.