| 摘要 |
Retaining body for fixing a plastic sealing sheet to a support, especially a tunnel wall, being composed of two discs 2, 3 linked together, oriented substantially parallel to each other and one of which is pressed by a base surface against the support whilst the other is connected by an upper surface to the plastic sheet, the two discs 2, 3 being connected together by at least one web 4 which is provided with a prescribed tearing zone having a predetermined resistance to tearing. <IMAGE>
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