A Tunnel Support System Applicable to Weak and Broken Surrounding Rock

Abstract

The invention belongs to the technical field of tunnel support, in particular to a tunnel support system suitable for weak and broken surrounding rock, including a broken surrounding rock layer and a primary support shotcrete layer, and a The hollow spiral anchor rod and anchoring device inside the concrete layer. The primary support shotcrete layer is fixed with the first reinforced shotcrete layer reinforcement board and the No. 1 reinforced shotcrete layer reinforcement board through several anchor devices. One end of the plate is integrally formed with a second bump, and by setting several reinforcement plates of the first reinforced shotcrete layer and the reinforcement plate of the No. And by arranging several first reinforced shotcrete layer reinforcement boards and No. 1 reinforced shotcrete layer reinforcement boards to form an arch, so that the support of the whole support device to the force is more stable.

Description

technical field [0001] The invention belongs to the technical field of tunnel support, and in particular relates to a tunnel support system suitable for weak and broken surrounding rock. Background technique [0002] Tunnel support refers to a permanent support structure built with reinforced concrete and other materials along the periphery of the tunnel body in order to prevent the deformation or collapse of the surrounding rock. Tunnel support technology is usually used in tunnel engineering, water conservancy channels, tunnel support Simply put, it is the inner lining, which is commonly supported by block tunnels, which can be prestressed high-pressure grouted plain concrete tunnel supports. [0003] The tunnel support system plays an important role in the construction of the tunnel. The existing Chinese patent No. CN207470209 U solves the problem of adding a steel frame mesh sprayed concrete inner layer support to the inner layer of the initial support of the tunnel. Un...

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Problems solved by technology

[0003] The tunnel support system plays an important role in the construction of the tunnel. The existing Chinese patent No. CN207470209 U solves the problem of adding a steel frame mesh sprayed concrete inner layer support to the inner layer of the initial support of the tunnel. Under the condition of relatively high soft rock formation, the concrete shotcrete layer is easy to crack and peel off and the deformation is not easy to control. The inconvenient handling of the area and the uneven stress during the tunnel support process lead to some inconvenience in the support project, and in the tunnel support project, when constructing the reinforced shotcrete layer, Requires firm support for the reinforced shotcrete course

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