roo.walters.4
New member
Hi there folks... might any mining enthusiast help me with the meaning of some mining terms please...
Breaking Line
Free face
Interburden
Thanks
Breaking Line
Free face
Interburden
Thanks
Yorkshireman wrote:
Could an intentionally shaped hole have been a forerunner of shaped charges?
Not realy, apart from insomuch as you are directing a line of fracture.
The shaped charge (Munroe effect) sort of works by focusing the detonation wave upon a particular point. The charge requires a stand off from the "burden" & in solid rock is pretty ineffective, in rather the same way as an adobe charge is - it needs a free face opposite the charge in order to work. Also you need an explosive with a high VOD and density (ie high brissance)- blasting gelatine having the lowest brissance (that I know of) that reliablely is used in such a way. Black powder certainly would not normaly suit the bill.