公开(公告)号：US20070214990A1

公开(公告)日：2007-09-20

申请号：US11622252

申请日：2007-01-11

申请人： Thomas Barkley ,  Dennis Johnson ,  Stanley Kelly ,  Robert Lee ,  Mark Woodall

发明人： Thomas Barkley ,  Dennis Johnson ,  Stanley Kelly ,  Robert Lee ,  Mark Woodall

IPC分类号： C06C5/04

CPC分类号： F42D1/00 ,  C06B23/003 ,  C06C5/04

摘要： The velocity of detonation of an explosive such as detonating cord (18, 22) is controlled by the addition of a diluent to the explosive, e.g., to the core of the detonating cord (18, 22). An explosively inert diluent, or a diluent comprised of an explosive of lower brisance than the principal explosive comprising the core of the detonating cord, will serve to reduce the velocity of detonation. Such reduced velocity of detonation has beneficial effects in certain operations, including cleaving rock (10), wherein it is observed to significantly reduce radial cracks (24) and stickers (26) (long radial cracks) in the vicinity of the boreholes (12) in which the low-velocity detonating cord (18, 22) is functioned to cleave the rock (10). The low-velocity detonating cord also facilitates leaving behind a smoother face in cutting trenches and tunnels through rock. The method of manufacture of low-velocity detonating cord includes incorporating a suitable diluent, such as phenolic microballoons, into an explosive core of, e.g., PETN.

摘要翻译： 通过向爆炸物中添加稀释剂，例如引爆线（18,22）的核心来控制诸如引爆线（18,22）之类的爆炸物的爆炸速度。 爆炸性惰性稀释剂或由包含引爆绳芯的主要炸药的爆炸物构成的稀释剂，将起到降低爆炸速度的作用。 这种降低的爆炸速度在某些操作中具有有益的效果，包括切割岩石（10），其中观察到显着减少钻孔（12）附近的径向裂纹（24）和贴纸（26）（长径向裂纹） 其中低速引爆绳（18,22）用于切割岩石（10）。 低速引爆线还有助于在通过岩石切割沟槽和隧道时留下更平滑的面。 制造低速引爆绳的方法包括将合适的稀释剂（例如酚类微球）掺入例如PETN的爆炸性核心中。