Tunnel support system suitable for soft and broken surrounding rocks

A technology for crushing surrounding rock and tunnels, applied in the field of tunnel support systems, can solve problems such as uneven stress, deformation, and easy cracking and peeling of the sprayed concrete layer, and achieve the effect of stable support

Active Publication Date: 2019-11-29
LANZHOU JIAOTONG UNIV
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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 la

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  • Tunnel support system suitable for soft and broken surrounding rocks
  • Tunnel support system suitable for soft and broken surrounding rocks
  • Tunnel support system suitable for soft and broken surrounding rocks

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[0021] Example

[0022] See Figure 1-5 , The present invention provides the following technical solutions: a tunnel support system suitable for weak and broken surrounding rock, including broken surrounding rock layer 1 and initial support shotcrete layer 2, and set on the broken surrounding rock layer 1 and initial support shotcrete layer The hollow spiral anchor rod 3 and the anchoring device 5 inside the concrete layer 2, the initial support shotcrete layer 2 is fixed with the first reinforced shotcrete layer reinforcement board 4 and the first reinforced shotcrete layer reinforcement board 13 through several anchoring devices 5. One end of the first reinforced shotcrete layer reinforcement board 4 is integrally formed with a second protrusion 9, and one side of the second protrusion 9 on the outer surface of the first reinforced shotcrete layer reinforcement board 4 is integrally formed with a second slot 10, One end of the No. 1 reinforced shotcrete layer reinforcement pla...

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Abstract

The invention belongs to the technical field of tunnel support, and particularly relates to a tunnel support system suitable for soft and broken surrounding rocks. The tunnel support system includes abroken surrounding rock layer and an initial support shotcrete layer, as well as a hollow screw bolt and anchor devices which are arranged inside the broken surrounding rock layer and the initial support shotcrete layer, the initial support shotcrete layer is fixedly provided with first enhanced shotcrete layer mending plates and enhanced shotcrete layer mending plates I through a plurality of anchor devices, one ends of the first enhanced shotcrete layer mending plates are integrally provided with second convex blocks, a plurality of first enhanced shotcrete layer mending plates are clampedto the enhanced shotcrete layer mending plates I, construction of the whole support device is more convenient and fast, and an arch is formed between the multiple first enhanced shotcrete layer mending plates and the enhanced shotcrete layer mending plates I, so that the support of the whole support device to force is more stable.

Description

Technical field [0001] The invention belongs to the technical field of tunnel support, and specifically relates to a tunnel support system suitable for weak and broken surrounding rocks. Background technique [0002] Tunnel support refers to a permanent support structure built with reinforced concrete and other materials along the periphery of the tunnel to prevent deformation or collapse of the surrounding rock. Tunnel support technology is usually used in tunnel engineering and water conservancy channels. Tunnel support Simply put, it is the inner lining. The common one is to use block tunnel support, which can be prestressed high-pressure grouting concrete tunnel support. [0003] The tunnel support system plays an important role in the construction of the tunnel. The existing Chinese patent with patent number CN207470209 U solves the problem of adding a steel frame net shotcrete inner layer support to the inner layer of the initial Under the conditions of higher soft rock form...

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Application Information

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IPC IPC(8): E21D11/08E21D11/10E21D11/14E21D20/02E21D21/00
CPCE21D11/08E21D11/083E21D11/10E21D11/14E21D20/02E21D21/0093
Inventor 轩俊杰卢永飞严松宏
Owner LANZHOU JIAOTONG UNIV
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