| 摘要 |
A nail 3, particularly for holding a supporting facing 4 of an excavation 1 characterised by: - a hollow enclosure 5 of tubular shape able to create a volume capable of receiving a hardening cement slurry, - a reinforcement 8 set out approximately axially to the inside of this enclosure, - means 6, 9, 7, 11 of tensioning this reinforcement, - means 12, 13 of injecting the slurry into the inside of the enclosure, - means 7, 11 of fixing the body to the nail. <IMAGE>
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