LOCK BOLT CONSTRUCTION DEVICE AND ITS METHOD

PROBLEM TO BE SOLVED: To provide such a construction device and method as being capable of preventing the blockage (plugging of anchoring material) of an exhaust and anchoring material discharge passage (a through-hole or an exhaust pipe), so that a hole wall can be judged to collapse when no anchor...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	HANEUMA TORU
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS GALLERIES HYDRAULIC ENGINEERING LARGE UNDERGROUND CHAMBERS MINING SHAFTS SOIL SHIFTING TUNNELS UNDERGROUND OR UNDERWATER STRUCTURES
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