Method for quickly blocking blast hole

The invention discloses a method for quickly blocking a blast hole, and the method comprises the following steps: (1) after the blast hole is filled with an explosive material and a detonating tube is educed, a hole plug which is made of a fibrous material and slightly smaller than the blast hole in...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DU HUASHAN, MIAO TAO
Format: Patent
Sprache:eng
Schlagworte:
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