摘要
本文提出了一个在三维岩体中计算爆破块度分布的数学模型。该模型根据多孔柱状药包在岩体中产生的应变波性质,通过最大拉应力瞬时断裂准则,计算出岩体破碎裂隙数,进而计算出台阶爆破块度分布。经现场试验验证,与实际结果相近。
A mathematical model for boulder size distribution in blasting of tridim-ensional rockmass is established. According to the model, firstly, one has to obtain the number of blasting-induced fissures on the basis of propertise of strain waves generated by multiplp-hole column charges and with the aid of the instantaneous rule maximium tensile stress. Then, one can determine the boulder size distribution in accordance with the number of fissures. Results calculated in this way are confirmed by the field tests.
