METHOD FOR FORMING RECESS ON OBJECT CAPABLE OF BEING EXCAVATED

To provide a method for forming a recess on an object capable of being excavated, the method being capable of securely and appropriately quarrying a block on the object capable of being excavated, such as a rock bed or a concrete body, from the outside to the inside in a depth direction and being ca...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KIKKO TOYOAKI, SHIROI MITSUO, MATSUDA AKINORI, YAMADA NAOTOSHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING MINING OR QUARRYING SHAFTS TUNNELS
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