摘要
常用求算岩石内爆炸裂隙区半径的计算公式中忽略了冲击波的作用、粉碎区的存在以及爆生气体的准静态作用。本文对该公式进行修正后并引入断层带应力波衰减指数α,并对应力波损伤后的裂隙区的扩展长度进行分析计算,从而得出:考虑“预损伤”作用时的爆炸裂纹长度大于不考虑“预损伤”情况下的裂纹长度。
The actions of shock wave,crushed zones and the actions of quasi-static detonation gas are always neglected in conventional formulas of calculating fissure diameter of explosion in rock.In this paper,the conventional formula was amended by introducing an attenuation indexαof stress wave in a fault zone to calculate expansion length of a fissure zone damaged by stress wave.There fore,we concluded that the fissure length calculated with our formula which considers advance damage,is longer than that calculated with the conventional formula which neglects advance damage.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2002年第1期81-84,共4页
Rock and Soil Mechanics
基金
安徽省教育厅自然科学基金资助项目(编号:2001kj232zd)
关键词
断层带
爆炸裂隙区
裂纹扩展长度
advance damage
fault zone
stress wave
expanding fissure
