Coal mine roof deep hole presplitting directional blasting energy-gathered pipe device

The utility model discloses a coal mine roof deep hole presplitting directional blasting energy-gathering pipe device which comprises energy-gathering pipes, an energy-gathering pipe connecting device, an energy-gathering pipe positioning device and a detonating cord, and the energy-gathering pipes...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHANG GUOQIANG, CHEN JIANPENG, LI XUEFENG, LI MIHE, DING NAN, LI ZHUHE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AMMUNITION BLASTING EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION HEATING LIGHTING MECHANICAL ENGINEERING WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!