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    On the basis of modern blasting theories,the moving process of explosive stress field of multi-row and simultaneity is analyzed and the characteristics of stress field inspired by equivalent effect cell of globosity charge in cylindrical charge structure are considered. Thus energy distributing equation of detonator explosion is established and the explosive energy utilizing rate factors are known. So the moving process model of the hole filling is constructed and the equation of calculating reasonable filling length is produced.
    本文在现代爆破理论的基础上,分析了多排同段爆炸应力场的作用过程以及柱状装药结构中等效单元球状药包所激发的应力场特点,建立了炸药爆炸能量分布方程,明确了影响爆炸能量利用率的因素,构建了炮孔充填物运动过程模型,得出计算合理充填长度方程。
    Numerical technique of determining utilization coefficeint of explosion energy is given through mechanical analysis on explosion of the spherical charge in rocks.
    本文通过球形装药与岩石爆炸作用的力学分析,给出确定爆炸能量利用率的数值方法。
    The computing examples showed that the utilization coefficeint of energy is about 50% in the blasting mainly for rupturing rocks, and the energy transmission ratio is about 40%.
    通过算例,对于以破碎为主要目的的岩石工程爆破,爆炸能量利用率约为50%,爆炸作用初期的爆炸能量传递率约为40%。
    In addition, the closer wave impedances of both rock and explosive, the higher the utilization coefficeint of energy.
    对于算例涉及到的炸药和岩石,两者的波阻抗越接近,爆炸能量利用率就越高。
    According to the study on the blast crack by fractal analysis,the mechanism improving periphery appearance and increasing the utilized explosion energy ratio by the controlled fracture blast is presented.
    文中根据爆破断裂的分形研究,阐述了控制断裂爆破改进周边成形质量,提高爆炸能量利用率的力学机制
    Large holespacing and small burden blast can enlarge the angle of crater,produce an arc free face beneficial to the intensification of reflecting tensile stress and the distribution of volocity field,anhance the utilization of blasting energy and improve blast efficiency,the parameters of hole patterm are better to be defermined by the test of double hole explosion crater and in light of the principle of free face with equal resistance.
    大孔距小抵抗线爆破使爆破漏斗角增大,产生有利于反射拉应力增强及速度场分布的弧形自由面,爆炸能量利用率高,爆破效果好。 其孔网参数宜采用双孔爆破漏斗试验,根据等阻力自由面原理确定。
    4) Improve stemming quality. By stemming the shot holes with machine-processed stem-soil,the explosive energy utilization ratio rises and 10% explosive are saved.
    4)改善堵塞质量 ,通过采用机械加工的炮泥堵塞孔口 ,使爆炸能量利用率提高 ,节省了 10 %的炸药消耗。
 

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