【摘要】 通过力学模型和数值计算 定量分析炮孔深度、孔距、空孔直径等因素对直眼掏槽爆破效果的影响，以及空孔在直眼掏槽中的作用。分析结果表明 在含空孔直眼掏槽爆破中，炮孔深度每增加1m，每装药孔所对应的空孔面积应相应增大3 ％ ～ 6 ％。更多还原

【Abstract】 The influence of the blast hole depth the hole spacing the diameter of empty hole and the other factors on the parallel hole cut blasting and the function of the empty hole in the parallel hole cut was analyzed quantitatively． The research result shows that when the hole depth increases by every 1 m the area of the empty holes corresponding to every charged hole should increase by 3 ％ ～ 6 ％ which is identical with the fact in the engineering practice．更多还原