TUNNEL FORMATION

PURPOSE:To shorten a construction period by inserting a heat pipe into the natural ground of a circumferential portion of a tunnel at a side wall part of a vertical shaft, and freezing the natural ground with an evaporator of the heat pipe via a coolant cooled by a refrigerating plant. CONSTITUTION:...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SUGAWARA SUKEYUKI, SHIRASAWA MAKOTO, TAKAMORI SADAHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING EARTH DRILLING EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS GALLERIES HEAT EXCHANGE IN GENERAL HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING HYDRAULIC ENGINEERING LARGE UNDERGROUND CHAMBERS LIGHTING MECHANICAL ENGINEERING MINING SHAFTS SOIL SHIFTING TUNNELS UNDERGROUND OR UNDERWATER STRUCTURES WEAPONS
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