SOIL IMPROVING APPARATUS

PROBLEM TO BE SOLVED: To efficiently pump up underground water when soil is to be improved by application of an impact force to ambient soil under the ground. SOLUTION: This soil improving apparatus includes a vertically extending hollow rod having a helical blade 18 and a lower end provided with an...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HAMADA NAOHITO, WATANABE NORIO
Format:	Patent
Sprache:	eng
Schlagworte:	EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
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