摘要
首先,从理论上分析了目前广泛使用的空腔膨胀理论在研究介质中侵彻与爆炸近区过程存在的问题及其产生的原因;然后,从近区应力与变形的实际状态出发,运用动量与质量守恒关系推得了介质近区运动学的关系式,并解决了变形波速确定的问题。运用此关系可以得到揭示侵彻、贯穿比例换算关系和爆炸近区的几何相似关系等简单实用的结果。
The fundamental problems of near cavity of penetration and explosion in rock are discussed： and some development tendencies are presented. The expressions about the kinematics problems near cavity do not agree well with the stress and the deformation states. That are the reasons that considerable errors exist in the results of many scholars studies. According to the stress and deformation states near cavity in practice, the relation formulas for the kinematics of medium are deduced by using the laws of conservations of momentum and mass; and the problem of the speed of the deformation wave is solved. With the proposed relation formulae, some useful results such as the proportional conversion relation of penetration and impenetration, geometrical resemblance relation of explosion near cavity, can be clearly understood. The application results of case study show that the proposed relation formulas are practical.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第16期2859-2863,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大项目(50490275)
关键词
岩石力学
岩石
侵彻与爆炸
近区
rock mechanics
rock
penetration and explosion
near cavity
