Tunnel support work

Abstract

This article is a tunnel support for preventing the collapse of the natural ground exposed during tunnel excavation. As shown in the reference perspective view, this article includes a top plate welded to one end of an H-shaped steel having an arc shape, a plate-shaped guide plate provided on the top plate and bent in the middle, and a connecting pin passing through the top plate. And, as shown in Reference Figure 1 showing the usage state and Reference Figure 2 showing the usage state, this article is connected to other tunnel supports via the connecting pins to form an arch-shaped connection body (support).

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