Method of and apparatus for providing an underground tunnel

A technique for providing a continuous underground tunnel between first and second spaced-apart points and for installing new cable, pipe or conduit utilizes a boring device (14) including means (36) for boring through soil and a thrust conduit (16) which pushes the boring device (14) through the so...

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Bibliographische Detailangaben
Hauptverfasser:	BAKER, GLEN, MERCER, JOHN E, FIKSE, JAMES ANTHONY, CHAU, ALBERT W
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRICITY FIXED CONSTRUCTIONS GALLERIES GENERATION INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES LARGE UNDERGROUND CHAMBERS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SHAFTS TUNNELS
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Beschreibung
Zusammenfassung:	A technique for providing a continuous underground tunnel between first and second spaced-apart points and for installing new cable, pipe or conduit utilizes a boring device (14) including means (36) for boring through soil and a thrust conduit (16) which pushes the boring device (14) through the soil from a first starting point to a second end point as the device (14) bores through the soil, thereby to form a tunnel between the two points. Thereafter, the cable to be installed within the tunnel is attached to the front end of the boring device (14) and the latter is pulled back through the tunnel to its starting point by means of the thrust conduit (16), thereby automatically pulling the new cable in place.