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以水泥砂浆、大理石及环氧树脂为模型材料,在实验室条件下用超动态量测系统和WZDD-1型动态光测弹性仪记录了应力波传播和裂纹扩展的动态过程。根据记录的实验结果分析和研究了影响光面爆破的因素之一——起爆的同时性及其对炮孔之间裂缝的产生、扩展和贯穿的影响。文中给出了一些典型的实验结果。
The dynamic process of stress wave propagation and crack propagation was recorded by the dynamic dynamic measuring system and WZDD-1 dynamic optical elastometer under the laboratory conditions with the cement mortar, marble and epoxy resin as the model materials. According to the recorded experimental results, one of the factors which affect the smooth blasting, the simultaneity of initiation and its influence on the generation, propagation and penetration of the cracks between the blast holes were analyzed and studied. The paper gives some typical experimental results.