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本文简要阐述了光面爆破形成贯通裂缝的物理过程。对于爆炸应力波和爆生气体的相互关系以及它们在光爆成缝中的作用提出了新看法。通过水泥砂浆和有机玻璃试件的模型实验(以8号电雷管作为装药),在不偶合装药条件下,研究了爆生气体的“气刃效应”以及爆生气体挤入裂缝后,其压力的衰减规律。实验中,在不偶合空间(孔壁与装药外表面之间)填入红墨水或铝粉,装药爆炸后,孔壁周围形成不同宽度和不同长度的裂缝,根据宏观测量和微量化学分析,以确定爆生气体是否可以挤入裂缝。从而为光爆机理的深入研究以及光爆参数的理论计算提供一定的依据。
This article briefly describes the physical process of forming smooth through cracks in smooth blasting. A new view is given of the interrelationship between the blast stress wave and the blasting gas and their role in the burst of light burst. Through the model experiment of cement mortar and plexiglass specimen (using No. 8 electric detonator as charge), the “gas edge effect” and the gas explosion of uncomplexed gas were studied under the condition of non-coupled charge. The pressure attenuation rules. In the experiment, red ink or aluminum powder was filled in the non-coupling space (between the wall of the hole and the external surface of the charge), and after the explosion of the charge, cracks of different widths and different lengths were formed around the wall of the hole. According to the macroscopic measurement and the trace chemical analysis To determine whether the gas explosion can squeeze into the cracks. So as to provide a certain basis for the further study of the light explosion mechanism and the theoretical calculation of the light burst parameters.