新型可预爆钻注锚一体化锚杆的研制

Research on New Pre-detonation Drilling and Grouting Anchor Integration Bolt

现行锚注支护技术难以适用深部岩层巷道的某些复杂地质条件,因此,设计了一种新型可预爆钻注锚一体化锚杆,利用锚杆前端多段爆药段爆破作用,快速扩大注浆区域,形成超大厚度的围岩加固带,充分利用围岩的自撑能力保证巷道的长期稳定,并且迅速贯穿渗水区域并注浆成保护区域。

Existing bolt-grouting support technology is difficult to apply to some of the deep rock tunnel complex geological conditions,therefore,the design of a novel drilling and grouting anchor bolt pre-detonation integration,The front of the bolt multi explosive blasting role in the rapid expansion of the the grouting area,formed the large thickness of the surrounding rock reinforcement belt,make full use of the surrounding rock self-supporting ability to ensure long-term stability of the roadway,and quickly throughout the area of water seepage and grouting into the protected area.