1) primary blasting
初次爆破
2) initial blast
初爆破
3) Secondary blasting
二次爆破
4) blasting in groups
分次爆破
6) incipient failure
初次破坏
1.
The characteristics of incipient failure of coal body before the initial coal and gas outburst is analyzed, especially the geometric characteristics of the incipient failure influencing the outburst are studied by a simplified model, which can explain the fracture of coal body and the formation of arching lamina.
针对煤矿煤与瓦斯突出动力现象的复杂过程,对突出启动前煤体的初次破坏特征进行了分析。
补充资料：初次
1.第一次。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条