Method for inspecting and repairing a foil for protecting the ground against contamination in addition to a method for examining the ground

摘要

The invention provides a method for inspecting the integrity of a foil (1) for protecting the ground against contaminants and for testing the foil (1) for damage by admitting a fluid into a system of tubes (2) arranged in or under the foil (1) and having at least one inlet opening (6) and at least one outlet opening (7) and measuring the composition or the pressure of the fluid at the outlet opening (7) and comparing this with the composition or pressure at the inlet opening (6). Damage in the foil (1) can be localized by arranging openings at certain locations in the tube system (2) and applying the method of claim 1 to the portion lying between the openings. The possibility also exists of repairing a foil (1) arranged under a building for protecting the ground against contaminants and having a system of tubes (2) arranged in or under the foil (1) by introducing a sealing material into tubes located in the vicinity of the damage.