巷道与上部煤柱边缘间水平距离X的选择

Selection of Horizontal Distance X Between Roadway and the Edge of its Upper Pillar

巷道与上部煤柱边缘之间的水平距离X,是底板岩巷和邻近煤层巷道布置的重要参数。本文根据矿山压力的研究成果,阐述了上部煤层采动状况,巷道围岩性质,巷道与上部煤层之间的垂距Z、以及巷道与上部煤柱边缘间水平距离X间的定量关系,为正确选择X值及巷道与上部煤层回采空间的相对位置关系提供了主要依据。

The horizontal distance X between roadway and the edge of its upper pillar is an important parameter for roadway layout in floor strata and adjacent coal seams. Based on the research achievements of strata pressure, this paper illustrates the quantitative relation among the mining situation of upper coal seam, surrounding rock properties of roadway, the vertical distance Z (between roadway and its upper coal seam), and the horizontal distance X (between roadway and the edge of its upper pillar), which provides a main basis for the selection of X value and the relative location between roadway and its upper coal seams.