不耦合装药对混凝土爆破效果的影响试验研究  

Experimental Study on Effect of Decoupling Charge on Concrete Blasting

作　　者：田浩 张义平[1] 王彬[1] 戴亦军 朱宝合 TIAN Hao;ZHANG Yi-ping;WANG Bin;DAI Yi-jun;ZHU Bao-he(School of Mining,Guizhou University,Guiyang 550000,China)

机构地区：[1]贵州大学矿业学院

出　　处：《爆破》2019年第3期25-30,42,共7页Blasting

基　　金：国家自然科学基金项目(50764001);中建股份科技研发课题(CSCEC-2017-Z-28)

摘　　要：为研究装药结构对炸药能量的传递和爆破效果,运用混凝土相似模拟试验的方法,对空气和聚苯乙烯(EPS)泡沫作为介质的径向不耦合装药爆破试验进行了对比,从爆破漏斗几何要素、飞石抛掷速度、能量利用率等方面进行分析。结果表明:在不耦合系数相同的条件下,采用聚苯乙烯(EPS)泡沫作为耦合介质与空气相比,漏斗半径r、深度h和体积V较大,初始抛掷速度v较小,炸药能量利用率高。建立拟合模型计算得出:空气不耦合装药时的最优不耦合系数为1.85,聚苯乙烯(EPS)泡沫不耦合装药时最优不耦合系数为1.65。In order to study the energy transfer and blasting effect of charging structure,an analog simulation experiment on concrete was carried out.The air and polystyrene foam was taken as the medium for radial uncoupling charge,respectively.The influence on the geometric elements of blasting crater,throwing speed of flying stone,and energy utilization rate were discussed.The results show that,under the same uncoupling coefficient,the parameters,including the radius,depth,volume,and capacity usage ratio of blasting crater with polystyrene foam as medium,are bigger than from the case of air medium.However,the initial throwing speed is smaller.The optimal air uncoupling ratio by the fitting model is 1.85,and 1.65 for the polystyrene foam.

关 键 词：装药结构 径向不耦合 聚苯乙烯 可靠依据 

分 类 号：TD235.3[矿业工程—矿井建设]