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瑞典律勒欧大学通过模型及现场实验,为块状岩体找出了一种新的控制爆破技术,从而可望减少井下冒落事故的发生;试验一种以石英砂为基体、以环氧树脂为胶结质的新模型材料,它能保证模型实验中产生的裂缝长度,与所模拟的17毫米柱状药包在岩巷内爆破后所产生的裂缝长度成比例。模型试验中最重的参数是裂缝长度、裂缝扩展深度和裂缝数量。通过理论分析和模型试验导出确定周边眼最优公式以获得最好的光爆效应和对围岩的最少破坏。
Lulei University in Sweden through the model and field experiments for the block rock mass to find a new controlled blasting technology, which is expected to reduce the occurrence of underground caving accident; test a quartz sand as a matrix, epoxy The resin is a cementitious new model material that ensures that the length of the crack produced in the model experiment is proportional to the length of the crack produced by the simulated 17 mm column packed in the rock lane. The most important parameters in the model test are the length of the crack, the depth of crack propagation and the number of cracks. Through theoretical analysis and model test, the optimal formula of perimeter eye is derived to get the best photo-explosion effect and least damage to surrounding rock.