trench shield

[′trench ‚shēld] (civil engineering) A movable shoring system consisting of steel plates and braces that are bolted or welded together; used to support the walls of a trench while work is in progress.

trench box, trench shield

trench box A heavily braced box of wood or steel which can be moved along a trench bottom as excavation and pipe laying

trench shield

A shoring system composed of steel plates and braces which are welded or bolted together; the shoring system supports the walls of a trench from the ground level down to the bottom of the trench; can be moved along as the work progresses.

单词	trench shield
释义	trench shield trench shield [′trench ‚shēld] (civil engineering) A movable shoring system consisting of steel plates and braces that are bolted or welded together; used to support the walls of a trench while work is in progress. trench box, trench shield trench box A heavily braced box of wood or steel which can be moved along a trench bottom as excavation and pipe laying trench shield A shoring system composed of steel plates and braces which are welded or bolted together; the shoring system supports the walls of a trench from the ground level down to the bottom of the trench; can be moved along as the work progresses.
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