炮眼堵塞结构设计及参数优化
发布时间：2019-06-22 14:22
【摘要】：为了解决钻孔爆破炮眼利用率低,装药量大等问题,结合多种机械动作堵塞结构的特点,应用膨胀技术的原理提出膨胀式堵塞结构,通过对堵塞结构进行力学分析,建立了最优膨胀角和最优堵塞长度计算模型。在摩擦系数为0.0028时,膨胀半锥角理论值为8°,在围岩、炸药、孔深一定的情况下,最优堵塞长度理论值为0.34 m,在经验值范围内。采用两种不同堵塞结构进行工业性试验,结果表明:膨胀式堵塞结构相对于粘土堵塞结构提高了炮孔的利用率,降低了用药量。膨胀式堵塞结构对堵塞结构的设计具有一定的指导意义。
[Abstract]:In order to solve the problems of low utilization rate and large charge quantity of drilling blasting hole, combined with the characteristics of various mechanical action blockage structures, the expansive blockage structure is put forward by using the principle of expansion technology. through the mechanical analysis of the blockage structure, the calculation model of the optimal expansion angle and the optimal blockage length is established. When the friction coefficient is 0.0028, the theoretical value of expansion half cone angle is 8 掳. Under the condition of certain surrounding rock, explosive and hole depth, the theoretical value of optimal blockage length is 0.34 m, which is in the range of empirical value. Two different blocking structures were used to carry out industrial tests. The results show that the expansion blockage structure improves the utilization ratio of the hole and reduces the charge consumption compared with the clay blockage structure. The expansion blockage structure has certain guiding significance for the design of blockage structure.
【作者单位】： 山西大同大学建筑与测绘工程学院;山西大同大学机电工程学院;山西大同大学煤炭工程学院;
【基金】：山西省科学技术发展计划(工业)项目(20140321003-05) 山西大同大学科学研究项目(2013K3);山西大同大学校级科研项目(2016K11) 大同市基础研究计划项目(2017133)
【分类号】：TB41
本文编号：2504664
[Abstract]:In order to solve the problems of low utilization rate and large charge quantity of drilling blasting hole, combined with the characteristics of various mechanical action blockage structures, the expansive blockage structure is put forward by using the principle of expansion technology. through the mechanical analysis of the blockage structure, the calculation model of the optimal expansion angle and the optimal blockage length is established. When the friction coefficient is 0.0028, the theoretical value of expansion half cone angle is 8 掳. Under the condition of certain surrounding rock, explosive and hole depth, the theoretical value of optimal blockage length is 0.34 m, which is in the range of empirical value. Two different blocking structures were used to carry out industrial tests. The results show that the expansion blockage structure improves the utilization ratio of the hole and reduces the charge consumption compared with the clay blockage structure. The expansion blockage structure has certain guiding significance for the design of blockage structure.
【作者单位】： 山西大同大学建筑与测绘工程学院;山西大同大学机电工程学院;山西大同大学煤炭工程学院;
【基金】：山西省科学技术发展计划(工业)项目(20140321003-05) 山西大同大学科学研究项目(2013K3);山西大同大学校级科研项目(2016K11) 大同市基础研究计划项目(2017133)
【分类号】：TB41
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