METHOD OF LOCAL OPEN OBSTRUCTION IN SEWAGE SYSTEM TUNNEL ELIMINATION

A method of local open obstruction in sewage system tunnel elimination by drifting the obstruction in the tunnel. For that a soil from the surface is frizzed by the liquid nitrogen, forming a "shelter" over the local obstruction of the primary treated hang up, and the drift in tunnel is pe...

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Hauptverfasser:	Korin'ko Ivan Vasyliovych, Sankov Heorhii Oleksandrovych, Honcharenko Dmytro Fedorovych
Format:	Patent
Sprache:	eng ; rus ; ukr
Online-Zugang:	Volltext bestellen
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