The results of both on the - spot testing blasting and practical blasting indicate that the damaged concrete - bed was successfully demolished and the reserved work ' s quality was effectively protected by organically combining the differential blasting principles and multi - cycle drilling blasting 现场试爆和实爆效果表明，通过微差爆破原理和多循环钻爆工艺的有机结合，成功拆除了混凝土底板的已破坏部分，有效地避免了挤压爆破对保留部位工程质量的影响。
