锚索外加固均质、层状及块状围岩的抗爆性能模型试验研究

Model tests on the explosion resistance of homogeneous, layered and massive country rock anchored by crossing cables

通过模型试验分析研究了交叉锚索对均质、层状及块状3种典型岩体加固前后的抗爆能力，研究成果给出了3种典型模拟岩体在有加固与无加固条件下的爆腔大小、破坏半径、爆心附近峰值压力分布规律等。试验表明：对于加固或未加固的均质、层状、块状3种典型模拟岩体，爆心附近模拟岩体内爆炸压力峰值与比例距离均成负幂指数衰减；对于无加固的3种典型模拟岩体，层状模拟岩体的抗爆能力最差，块状模拟岩体的抗爆能力最好；对于加固模拟岩体，均质模拟岩体的抗爆效果最好，块状模拟岩体的抗爆效果最差。

The explosion resistance of the homogeneous ,layered and massive country rock anchored by crossing ca- bles is researched by model tests based on the theory of similarity. The explosion cavity size, damage radii and peak pressures near the explosion center in the model bodies are obtained. The tests show that the peak explosion pres- sure near the explosion center decreases by negative power exponent as the ratio distance increases in the 3 typical kinds of model rock . The explosion resistance of layered rock is the worst, while that of massive rock is the best. The explosion-resistant effectiveness of the reinforced homogeneous rock is the best, while that of the reinforced mas- sive rock is the worst.