【摘要】 以准静定和摩尔-库仑理论为基础,分别推导了土中球状药包爆腔半径的预测公式。预测值与试验值对比结果表明:准静定理论的公式预测值和试验值基本吻合,误差在1.2%～24.5%之间。摩尔-库仑理论的公式预测值与已有试验值比较,塑性较小的土中基本吻合,塑性较大的土中预测值略小,误差接近30%。预测公式能克服已有公式中确定经验系数的困难。本文的研究对土中爆炸空腔半径预测有一定的参考价值。更多还原

【Abstract】 Based on quasi-static theory and mohr-coulomb theory,two predictive formulas of spherical charge on blasting cavity radius in soil are deduced. The predictive values are compared to the experimental ones. The comparison results show that the predictive values of quasi-static theory are basically approach to the experimental values,error range is between 1.2%～24.5%; the predictive values of mohr-coulomb theory are basically approach to the experimental ones in the soil with low ductility,while the predictive values are slightly small in the soil with high ductility and relative error is about 30%. The difficulty of empirical coefficient determination can be overcome by predictive formulas. This research has certain reference value for the prediction and of spherical charge on blasting cavity radius in soil.更多还原