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本文叙述了在水泥模型中测量炸药爆炸时产生的裂缝及其发展速度。 试验表明:裂缝是从中心向外和从外向里两个方向发展并在某处相会穿通;裂缝的速度是随距离的增加而衰减;裂缝速度值的大小是受介质中应力场的分布影响的;裂缝速度的衰减规律,主要是与介质的力学性质有关。 文中也报导了一些新的实验技术和一些新的现象。
This article describes the measurement of the fractures and their rates of evolution during explosions in cement models. The results show that the fractures develop from the center to the outside and from the outside to the inside, and penetrate somewhere. The velocity of the fractures decays with the increase of the distance. The magnitude of the fracture velocity is affected by the distribution of the stress field in the medium The attenuation law of the crack velocity is mainly related to the mechanical properties of the medium. The article also reported some new experimental techniques and some new phenomena.