论文部分内容阅读
本文从动力学的观点研究了即发爆破和微差爆破时岩体破坏的过程。在透明模型内进行爆破试验时,用CΦP型摄影装置来记录模型破坏的过程,该摄影装置的摄影速度是每秒钟2,500,000张照片。图1表示了单个药包爆炸时模型破坏的过程。图1a表示出由爆炸产生的圆柱波形的主剪应力场的传播过程和产生反射波的过程,柱面波的传播速度是2800米/秒。图16表示径向裂隙的发展过程,与其后在反射波作用下的岩体破坏过程。进一步的研究确定:随着药包重量及其猛度的增加,破坏范围亦增加。此外,也发现当
In this paper, from the viewpoint of dynamics, the process of rock mass destruction during immediate blasting and micro-blasting is studied. In a burst test in a transparent model, the process of model destruction was recorded with a C [Phi] P-type photographic apparatus having a photographing speed of 2,500,000 photographs per second. Figure 1 shows the process of model destruction in a single pack explosion. Figure 1a shows the propagation of the main shear stress field of a cylindrical waveform generated by an explosion and the process of producing a reflected wave with a wave velocity of 2800 m / s. Figure 16 shows the development of radial fractures, followed by the failure of rock mass under the influence of reflected waves. Further research to determine: With the increase in the weight of the bag and its fierce increase in the scope of damage also increased. In addition, also found that when