新型复合锚固结构抗爆宏观效应与分析

为研究新型复合锚固结构的抗爆性能，进行了岩石中该结构与单一锚周结构的抗爆效应现场对比试验。试验结果表明：新型复合锚固结构洞室的临界破坏荷载是单一锚固结构洞室的178％；就破坏程度而言，单一锚固结构洞室是新型复合锚固结构洞室的2．5倍；复合锚固结构存在优化设计问题，优化设计因素包括：空孔直径、空孔密度、空孔深度、锚固区深度。新型复合锚固类结构的弱化效应吸能非常显著，用于岩石介质洞室的抗爆加固是完全可行的，并具有显著的技术经济效果。

Macro-effect and analysis of antiexplosion of new composite anchorage structure

In order to study the antiknock performance of the new composite anchorage structure, the field comparison test of the antiknock effect of the structure and the single anchorage structure in rock was carried out. The test results show that the critical failure load of the new composite anchorage structure cavity is 178% of that of the single anchorage structure cavity. In terms of damage degree, the single anchorage structure cavity is 2.5 times that of the new composite anchorage structure cavity. The optimization design of composite anchorage structure is a problem, and the optimization design factors include: diameter of empty hole, density of empty hole, depth of empty hole and depth of anchorage zone. The energy absorption effect of the new composite anchorage structure is very significant, and it is completely feasible to be used for anti-explosion reinforcement of rock medium caverns, and has remarkable technical and economic effects.