instantaneous blast meaning in Chinese

瞬发爆破
瞬时爆破

Is there a time sequencing delay between the 1m segment blasts , or is it one instantaneous blast
请问：对于1米高的分段，是进行微差爆破，还是进行瞬间爆破？
Under the effect of instantaneous blasting shock wave , the reliability of lining is affected . the influence on existing tunnel relates to amount of dynamite , tunnel space , area of vvok face and rigidity of round rock
在爆破冲击波的瞬间作用下，既有隧道衬砌安全性将受到影响，装药量、隧道间距、开挖面面积、围岩软硬程度都与爆破冲击对既有隧道的影响有关。