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Cyclic support structure, permanent support structure, and tunnel support method

A structural and permanent technology, which is applied in the fields of permanent support structure, tunnel support, and circular support structure, and can solve problems such as poor support effect, complex structure, and inconvenient support at the bottom of the arch foot of the steel arch.

Inactive Publication Date: 2020-08-04
JINAN MUNICIPAL ENG DESIGN & RES INSITITUTE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this disclosure is to overcome the shortcomings of the above-mentioned prior art, and provide a circular support structure, a permanent support structure and a method, which can solve the problem that the bottom of the arch foot of the steel arch is not easy to support, the support effect of the existing support method is poor, and the structure complicated question

Method used

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  • Cyclic support structure, permanent support structure, and tunnel support method
  • Cyclic support structure, permanent support structure, and tunnel support method
  • Cyclic support structure, permanent support structure, and tunnel support method

Examples

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Effect test

Embodiment 1

[0035] like figure 2 , Figure 5 As shown, this embodiment provides a cyclic support structure 14, including a hydraulic cylinder, the hydraulic cylinder includes a cylinder body 3 and a hydraulic column 2, the inner chamber of the cylinder body 3 communicates with the hydraulic station 12; the hydraulic column 2 The end of the support plate 1 is hinged to one side of the support plate 1, so that the support plate 1 can rotate along the end of the hydraulic column 2 within a set angle range, and the support plate 1 is used to support the arch foot.

[0036] The oil in the cylinder body 3 can flow back into the hydraulic station 12 after the arch foot in the tunnel is stabilized, so as to realize the unloading and removal of the hydraulic cylinder.

[0037] Specifically, in this embodiment, an oil inlet 7 and an oil outlet 8 are provided on the side of the cylinder body, and the oil inlet and the oil outlet are respectively communicated with the hydraulic station through oil ...

Embodiment 2

[0043] like image 3 , 4 , 5, 7, and 8, this embodiment provides a permanent support structure 15, including a hydraulic cylinder, the hydraulic cylinder includes a cylinder body 3 and a hydraulic column 2, and the inner cavity of the cylinder body 3 communicates with the hydraulic station 12 The end of the hydraulic column 2 is hinged to one side of the support plate 1, so that the support plate 1 can rotate along the end of the hydraulic column 2 within a set angle range, and the support plate 1 is used to support the arch foot;

[0044] The side of the cylinder 3 is provided with a grouting hole, and the grouting hole can be communicated with the grouting equipment through the pipeline, and the grouting equipment can flow to the cylinder 3 after the oil in the cylinder 3 flows back into the hydraulic station 12. 3 Cement slurry is injected into the inner cavity to realize the permanent fixation of the cylinder body 3 and the hydraulic column 2.

[0045] In this embodiment, ...

Embodiment 3

[0053] like figure 1 , 6 As shown, the present embodiment provides a tunnel support method for step method construction, comprising the following steps:

[0054] Excavate the upper steps to the set depth, erect the upper arch, and support the arch feet of the upper arch through the circular support structure 14; inject hydraulic oil into the cylinder 3 of the circular support structure 14, and the upper arch will follow the hydraulic column 2 Rise to a set distance and complete the temporary support of the upper surrounding rock;

[0055] The surrounding rock above the upper steps is deformed and stabilized, and the bolts are used to support the arch foot at the upper arch, and the circular support structure 14 is removed. The anchor rod here can adopt the foot anchor rod 11.

[0056] Excavate the lower steps to the set depth, erect the lower support frame, the arch foot of the upper arch frame is fixedly connected with the upper end of the lower support frame, and the arch...

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Abstract

The invention discloses a cyclic support structure, a permanent support structure, and a tunnel support method. The structure comprises a hydraulic cylinder; the hydraulic cylinder comprises a cylinder block and a hydraulic column; an inner cavity of the cylinder block communicates with a hydraulic station; the tail end of the hydraulic column is hinged to one side surface of a support disc, so that the support disc can rotate along the tail end of the hydraulic column within a set angle range; the support disc is used for supporting an arch foot; and oil in the cylinder block can flow back tothe hydraulic station after being stabilized in the arch foot of a tunnel so as to implement unloading and disassembly of the hydraulic cylinder.

Description

technical field [0001] The disclosure belongs to the technical field of tunnel construction, and in particular relates to a circular support structure, a permanent support structure and a tunnel support method. Background technique [0002] The inventor understands that the mining method is a construction method commonly used in tunnel construction, and the existing construction technology has been relatively perfect. However, due to the existence of construction errors in the construction process, over-excavation phenomenon will occur, which makes the steel arch in the initial support The arch foot of the frame cannot be stably seated on the surrounding rock, causing the arch foot to be hollow, or the surrounding rock is relatively broken, resulting in a large displacement at the arch foot. Since the steel arch frame cannot play a good supporting role, the deformation of the surrounding rock increases, resulting in excessive settlement, which affects the safety of the tunne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/18
CPCE21D11/18E21D11/183
Inventor 王建光李彦明郑召怡张翼杨海涛庒欠国
Owner JINAN MUNICIPAL ENG DESIGN & RES INSITITUTE GRP
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