Initial support device for weak surrounding rock bias multi-arch tunnel

A technology for multi-arch tunnels and initial support, applied in tunnels, tunnel linings, safety devices, etc., can solve problems such as tunnel water inflow, tunnel rock loosening, and falling blocks

Pending Publication Date: 2021-09-03
浙江交工宏途交通建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] After the tunnel is excavated, the tunnel needs to be initially supported, and the mortar is sprayed on the side wall of the tunnel, but the water in the rock layer moves in the gaps in the rock layer to wash the mortar and the rock layer, causing the rocks around the tunnel to loosen, which is easy to cause water gushing and falling in the tunnel. block and other accidents

Method used

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  • Initial support device for weak surrounding rock bias multi-arch tunnel
  • Initial support device for weak surrounding rock bias multi-arch tunnel
  • Initial support device for weak surrounding rock bias multi-arch tunnel

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Please refer to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 ,in figure 1 A structural schematic diagram of the initial support device for the weak surrounding rock biased multi-arch tunnel provided by the present invention; figure 2 for figure 1 The enlarged schematic diagram of the structure at A shown; image 3 for figure 2 The schematic diagram of the internal structure of the support rod; Figure 4 for figure 2 The enlarged schematic diagram of the structure at B shown; Figure 5 for image 3 The schematic diagram of the internal structure of the fixed sleeve is shown; Figure 6 for Figure 4 The schematic diagram of the internal structure of the connection board is shown. The initial support device for the weak surrounding rock biased multi-arch tunnel includes: a support mechanism 1; a water pump ...

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Abstract

The invention provides an initial support device for a weak surrounding rock bias multi-arch tunnel. The initial support device for the weak surrounding rock bias multi-arch tunnel comprises a support mechanism, a water pump, an anchor rod and a filtering mechanism, wherein the filtering mechanism comprises a mounting pipe, a drainage pipe, a connecting plate, convex blocks, a filter screen, a pointed end and a fixing rod, the mounting pipe is mounted in the anchor rod, and the drainage pipe is slidably connected into the mounting pipe; the top end of the drainage pipe is rotationally connected with the connecting plate, and the convex blocks with arc-shaped side walls are mounted on the side wall of the connecting plate at equal intervals; the interior of the connecting plate is rotationally connected with the filter screen, and the filter screen is fixedly connected with the drainage pipe; the fixing rod is mounted on the side wall of the drainage pipe, and the fixing rod and the filter screen are rotationally connected into the pointed end; and the initial support device further comprises a connection mechanism and a rock layer. The initial support device for the weak surrounding rock bias multi-arch tunnel has the advantages that accumulated water in a rock stratum is effectively discharged, and the strength of the rock stratum is improved.

Description

technical field [0001] The invention relates to the technical field of pile hole construction, in particular to an initial support device for weak surrounding rock biased multi-arch tunnels. Background technique [0002] The rock mass in the fractured zone of tunnels with soft surrounding rocks is loose, and there may be mud or crevice water, while the construction process of multi-arch tunnels is complicated, technically difficult, and the construction period is relatively long. Mutual influence is reflected in the force of the tunnel as the bias and horizontal thrust acting on the partition wall. [0003] After the tunnel is excavated, the tunnel needs to be initially supported, and the mortar is sprayed on the side wall of the tunnel, but the water in the rock layer moves in the gaps in the rock layer to wash the mortar and the rock layer, causing the rocks around the tunnel to loosen, which is easy to cause water gushing and falling in the tunnel. block and other accide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/18E21D20/02E21F16/02
CPCE21D11/183E21D11/107E21D20/021E21F16/02
Inventor 傅建红牛海波廖世川吴浩陈志才吴泓霆刘馨月张智华王强米志刚肖东平莫峰麻晓波余友江
Owner 浙江交工宏途交通建设有限公司
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