It is well established that the knowledge about shock wave propagation in the free field cannot be applied to confined environments, especially when it comes to predicting the reflected shock wave. With the increase in accidental or intentional detonations of explosives in confined or urban environments, it is important to study and thoroughly understand the propagation of shock waves to provide behavior prediction tools. The present research focuses on understanding the influence of a variation in the explosion center in a confined room and how this variation affects the shock wave propagation and the reflection due to the confined environment. The shock waves were generated by the detonation of a stoichiometric hemispherical charge of propane–oxygen mixture. The charge was placed in a small-scale model (Hopkinson’s scaling law) which represents a typical room in a building. The model was equipped with 29 pressure sensors distributed on the walls and the floor to record pressure history data. The aim of this study was to determine experimentally the evolution of the shock wave parameters such as the maximum overpressure or the arrival time and to predict the origin of the first three reflected peaks with the help of a simple and fast tool.

中文翻译：

---

爆炸中心对密闭室内冲击波传播的影响

众所周知，关于自由场中激波传播的知识不能应用于受限环境，尤其是在预测反射激波时。随着在密闭或城市环境中意外或故意爆炸爆炸物的增加，研究和彻底了解冲击波的传播以提供行为预测工具非常重要。目前的研究重点是了解密闭室内爆炸中心变化的影响，以及这种变化如何影响冲击波传播和由于密闭环境引起的反射。冲击波是由丙烷 - 氧气混合物的化学计量半球电荷的爆炸产生的。电荷被放置在代表建筑物中典型房间的小比例模型（霍普金森缩放定律）中。该模型配备了 29 个压力传感器，分布在墙壁和地板上，用于记录压力历史数据。本研究的目的是通过实验确定冲击波参数（例如最大超压或到达时间）的演变，并借助简单快速的工具预测前三个反射峰的起源。