| 摘要 |
A trench liner system used for forming a dual containment trench and for relining an existing trench has a primary liner and a secondary liner means extending along the length of the trench, a separating means is disposed between the primary liner and the secondary liner. A means for holding the primary liner, the secondary liner and the separating means against the trench walls. The separating means also includes a perforated plate in contacting relationship with the lower edges of the opposed elongated members under which a means for detecting a leak in the primary liner is positioned. The separating means has a plurality of ribs spaced between the liner means so that a cavity is formed between the primary liner means and the secondary liner means between the ribs. A support member, having a plurality of pairs of elongated members, is disposed along the trench such that the rear surface of each elongated member is in contact with one wall of the trench and the underside surface of each member is in contact with the bottom of the trench. The elongated members are in opposed relationship to each other.
|
