爆炸载荷作用下的岩石损伤断裂研究  

STUDY ON ROCK DAMAGE AND FRACTURE UNDER EXPLOSION LOAD

作　　者：林英松[1] 阮新芳[1] 蒋金宝[1] 丁雁生[2] 郑哲敏[2] 陈力[2] 朱天玉[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257062 [2]中国科学院力学研究所,北京100081

出　　处：《工程爆破》2005年第3期14-18,共5页Engineering Blasting

摘　　要：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。The rock blasting mechanism is a complicated subject and at present the study of its theory isn＇ t mature. Using the ancient solid mechanics methods to explain mechanical behavior of rock under explosion load can＇t reveal the whole process of rock blasting, and meanwhile, it＇s difficulty to ascertain damage and fracture in rock. While using mes^damage mechanism and rock meso-damage mechanics can do it well. The mechanism of damage and fracture of rock blasting is composed of blasting mechanism and rock meso-damage theory. The present paper pointed out the deficiencies and development direction of the existing model of rock blasting based on the analysis of the existing damage model of rock blasting, and analyzed damage characteristic of cement sample through doing underwater blasting experiment.

关 键 词：岩石 损伤 爆炸载荷 微裂纹 

分 类 号：O382.2[理学—流体力学] TU45[理学—力学]