巷道与上部煤层间垂距Z的选择

The Selection of Vertical Distance Z between Roadway and Its Upper Coal Seam

本文根据矿山压力的研究成果,阐述底板岩巷和邻近煤层巷道的重要参数—巷道与上部煤层之间的垂直距离Z。分析研究上部煤层采动状况和巷道围岩性质同确定Z值的定量关系,得出了包容选择Z值诸影响因素的关系式,为正确选择底板岩巷与上部煤层间的垂距提供主要依据。

Based on the researches of underground pressure this paper illustrates the important parameter of Z, i.e the vertical distance between roadway and its upper coal seam. It analyzed the quantitative relation between the mining state of upper coal seams, the surrounding rock properties of roadway and the correct selection of value Z. A formula containing factors influencing the selection of value Z was obtained. This provides a predominant basis for correctly chooing the value of Z.