复杂条件下的地下厂房岩壁梁岩台开挖爆破实践

Engineering Practice in Blasting Excavation of Underground Workshop′s Rock Anchor Beam in Complex Conditions

在白莲河抽水蓄能电站地下厂房岩锚梁开挖施工过程中,针对节理、裂隙较发育且地质构造复杂的特点,采用预留保护层分区、分步开挖方法,通过调整爆破参数和施工方法进行了多种方案的现场试验,确定了优化的开挖方案和爆破参数,获得了较好的岩台质量。

In the excavation of underground workshop＇s rock anchor beam for the Bailianhe Hydropower Station, the zoning and stepping excavation to protect area was used according to the characteristics of the geological structure. The optimal excavation scheme and blasting parameters were determined through the optimal blasting parameters and the optimal excavation scheme to proceed field test of various plans. The quality of formed rock bench have been obtained.