| 摘要 |
<p>A shoring box system (10) for use in a ground trench (60) includes a pair of shoring panels (12) and a number of elongate props (22). The props are attached to the two shoring panels to maintain the panels in an erected position in which they are spaced apart, with an open zone (19) between the panels. The props can be detached from the shoring panels while the shoring panels are in the erected position. In an embodiment each panel is hollow and has a lower opening (36) with a closure flap (38) for closing the opening, to enable filling material in the hollow to pour from the panel as it is removed from the trench. Also in an embodiment, each shoring panel is tapered in a downward direction.</p> |
