混凝土试件爆炸致裂效果研究

Study of Pre-splitting Exploding Effects on Concrete Sample

基于径向辐合渗流试验原理,对混凝土试件爆炸致裂效果进行了渗透试验研究,得出渗透系数和多种因素有关。它随着炸药量的增加而呈对数增长;随影响半径的增加而呈幂指数降低;小药量多孔爆破效果比大药量单孔爆破的效果要好,但是药量过于分散,其效果反而会变差;起爆方式对渗透系数有一定的影响,但这种影响不明显。

Permeability test is conducted to study pre-splitting exploding effects on concrete sample on the basis of radial spoke permeability theory,to draw a conclusion that coefficient of permeability shows logarithmic growth with explosive,to show power exponent reduction with radius.The effect of small quantity of explosive with multihole exploding is better than that of big quantity of explosive with individual shot,but the effect will be bad if explosive is dispersed,detonating mode has not obvious effects on coefficient of permeability.