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岩石爆破机理是一个复杂的问题,目前理论研究还不是很成熟。根据以往经典固体力学方法解释岩石在爆炸载荷作用下的力学行为,是无法揭示岩石爆破破碎的全过程,也难以确定岩石内的损伤和破坏程度;采用细观力学方法可以深入了解岩石内部从损伤到破碎全过程。岩石爆破损伤断裂机理是由岩石爆破机理和岩石细观损伤力学理论组成的。本文在分析研究现有岩石爆破模型的基础上,指出了现有的岩石爆破损伤模型存在的不足及发展方向;并进行了水中爆炸实验,分析了激波对水泥试样的损伤特性。
Rock blasting mechanism is a complex issue, the current theoretical research is not very mature. According to the classical method of solid mechanics, the mechanical behavior of rocks under explosive load can not reveal the whole process of rock blasting and crushing. It is also difficult to determine the degree of damage and damage in the rock. Using the meso-mechanics method, To the whole process of crushing. Rock burst damage fracture mechanism is composed of rock blasting mechanism and rock meso-damage mechanics theory. Based on the analysis of existing rock blasting models, the existing shortcomings and development directions of rock blasting damage models are pointed out. The underwater explosion experiments are carried out and the damage characteristics of shock waves to cement samples are analyzed.