Process and tool for laying underground collector mains for liquids and gases

US5597045A · kind A · utility

Assignees

• Flowtex-Service Gesellschaft Fur Horizontalbohrsysteme mbH & Co. KG · DE
• Ingo Sass · DE
• Schumacher Umweltund Trenntechnik · DE

Inventors

• Ingo Sass · Bensheim, DE
• Hans-Joachim Bayer · Dessau, DE
• Klaus Kleiser · Blankenloch, DE
• Jorg Ganger · Neuenbürg, DE

Key dates

• Filing date: Feb 6, 1995
• Grant date: Jan 28, 1997
• Expiry date: Feb 6, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A20/00
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

For the induction of underground collector mains, in particular for the ctruction of horizontal filter wells and drainage mains, at least one bore (1) having respectively an inlet aperture (3) and an outlet aperture (4) is introduced into predetermined layers of soil. Then a filter strand drawing in unit (5) which consists of an inner filter strand and an outer protective pipe is inducted into the respective bore (1) and finally the outer protective pump of the filter strand drawing in unit (5) is removed. The filter strand in unit is used as a tool consisting of an inner filter strand and an outer protective pipe. In a preferred further development, the intermediate space between the inner filter strand and the outer protective pipe is provided with filter sand and/or a filter gravel filling.