复杂地质条件下特厚煤层沿底掘进顺槽支护实践

摘要

在埋深大、构造发育且煤层结构松散等复杂地质条件下，对特厚煤层顺槽进行沿底托顶煤掘进，通过确定合理的支护参数，选用高强扭矩预应力锚杆，并辅以锚索补强，保证了顶板稳定性，实现了安全支护前提下的快速掘进。%Complicated geological conditions, as deep buried depth, developed structure and loosed coal seam, are always disadvantageous to stability of crossheading advancing along the floor of very thick coal seam. Determining reasonable parameters to control its stability, including reinforced prestressed bolt and cable anchor, roof strata of crossheading may be stable, which is premised to quick and safe drivage