摘要
炮孔深度(装药长度)是影响岩体中爆炸应力波特性的因素之一。利用所编制的有限差分程序SMMIC计算了单自由面条件下,垂直炮孔爆炸应力波的传播过程。计算表明,炮孔深度(装药长度)增大,爆炸应力波峰值随距离的衰减指数减小。在算例中,4 m和2 m孔深的爆炸应力波峰值随距离的衰减指数分别为1.35和1.56。
The hole depth (charge length) is one of the factors to influence the character of blast wave in rock. Using the difference code SMMIC developed by the authors,the spread process of the blast wave in the vertical hole with single free surface is analysed. The results indicate that the decay coefficient of the peak value of blast wave with the distance will be reduced as the hole depth (charge length) is increased. The decay coefficients of the peak value of blast wave with the distance are 1.35 and 1.56 corresponding to 4 m and 2 m deep holes respectively.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第4期550-553,共4页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(19972013
59974019)。
