【摘要】 天然岩体在爆破开挖过程中,容易形成局部的边坡岩体松动带,从而使岩体自稳能力降低,甚至可能造成滑坡或道路坍塌。采用预裂爆破和深孔微差爆破技术相结合,在拟建马道处预留保护层岩体的施工方法,选取合理的爆破参数使预留边坡岩体得到了保护,通过对已爆边坡面进行喷射混凝土的方法保证了已爆边坡面的稳定性,为相似边坡开挖爆破施工提供依据。更多还原

【Abstract】 Natural rock easily produced partial incompact zone in blasting,which reduced its self-stable ability and even caused the landslides and road collapses.Based on the combination of presplitting blasting and deep hole millisecond blasting technology,the construction method that the protechtion layer is reserved on the location of the road is adopted and the reasonable blasting parameters are selected.Stability of the surface on slope has been ensured by jetting concrete,which provided the basis for blasting excavation of the similar slopes.更多还原