摘要
通过实验室实验以及数值模拟的方法,对不同不耦合系数装药下炸药在混凝土模型中爆炸所产生的爆破漏斗进行对比分析。得到在相同装药量情况下,不耦合系数分别为1.0、1.4和1.8时,爆破振速的衰减速度随着不耦合系数的增大呈现先减小后增大的趋势,爆破漏斗的体积随着不耦合系数的增大同样呈现先减小后增大的趋势。通过对爆破后粉碎区大小以及炸药爆炸所引起的爆破振动进行比较,发现存在一个最佳不耦合系数使得炸药的能量能够更加充分的利用,提高炸药爆炸时的能量利用率。
The blasting craters generated by the explosion in the concrete model under different decoupling coefficients were compared by model experiments and numerical simulation methods.It was observed that the attenuation speed of the blasting vibration velocity decreased firstly and then increased with the increase in decoupling coefficient(1.0,1.4 and 1.8)under the same charging amount.Similarly,the volume of the blasting crater also decreases firstly and then increases with the increase of the decoupling coefficient.It is found that there is an optimal decoupled charge so that the energy of the explosive can be more fully utilized and energy utilization efficiency of the explosive is improved.
作者
岳中文
胡晓冰
陈志远
魏格平
魏正
于蒙洲
宋家旺
YUE Zhong-wen;HU Xiao-bing;CHEN Zhi-yuan;WEI Ge-ping;WEI Zheng;YU Meng-zhou;SONG Jia-wang(School of Mechanics and Civil Engineering,China University of Mining and Technology,Beijing 100083,China;Inner Mongolia Kangning Blasting Co.,Ltd.,Ordos 017000,China)
出处
《爆破》
CSCD
北大核心
2020年第3期34-39,共6页
Blasting
基金
国家重点研发计划专项资助(2016YFC0600903)。
关键词
不耦合装药
能量利用率
爆破振动
爆破漏斗
数值模拟
uncoupled coefficient
energy utilization efficiency of explosives
blasting vibration
blasting funnel
numerical simulation
