回采巷道变形机理及其控制技术探究

Study on Deformation Mechanism of Mining Roadway and Its Control Technology

通过分析巷道围岩位移变化,提出上部煤层回采过程使下部煤层应力不再均匀分布,使煤层顶板完整性受到破坏,易出现漏顶、冒顶事故。因此,需要合理布置巷道位置,使其远离高应力区,同时,加强回采巷道支护,控制巷道围岩变形。

By analyzing the displacement of surrounding rock, the author proposed that stress distribution of lower upper coal seam is no longer uniform because of upper coal seam extraction process, which damaged the integrity of the seam roof. Therefore,reasonable roadway layout position was required, and it should be away from the high stress areas. At the same time, the roadway support was needed to be strengthened, deformation of mining roadway should be controlled.