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Tunnel support for drilling and blasting and TBM combined construction and support construction method thereof

A combination and tunnel technology, applied in tunnels, earthwork drilling, tunnel lining, etc., can solve the problems of easy landslides, poor support effect, landslides at the entrance of the tunnel, etc., and achieve the effect of avoiding the collapse of the tunnel

Pending Publication Date: 2022-04-22
CHINA FIRST HIGHWAY ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Tunnel construction will be encountered in the construction process of hydropower, railway, highway, subway, etc. Especially in the process of tunnel excavation, how to ensure the stability of the surrounding rock of the tunnel during the construction period is especially important for the construction process. The support of the tunnel is very important for the project. Normal construction plays a very important role. Once the support structure is not well prepared, it is easy to cause problems such as landslides, which will affect the progress of the construction and even endanger the lives of the staff in severe cases.
[0003] For the existing tunnel support, it is often only supported for the inner wall of the tunnel, but at the entrance of the tunnel, due to the vibration of the soil during the construction process, it is easy to form a landslide at the entrance. In addition, the current Some tunnel support methods often only use steel structure for support, and the support effect is average, which cannot meet the existing construction needs

Method used

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  • Tunnel support for drilling and blasting and TBM combined construction and support construction method thereof
  • Tunnel support for drilling and blasting and TBM combined construction and support construction method thereof
  • Tunnel support for drilling and blasting and TBM combined construction and support construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as Figure 1 to Figure 8 Shown: A tunnel support for drilling and blasting + TBM combined construction, including

[0036] The opening supporting assembly 1 is arranged on the outside of the opening of the drilled tunnel for supporting the opening, and it consists of a pre-buried pipe 5 inserted in the opening hole 4 at the opening, through wire binding and the pre-embedded pipe 5. The buried pipe 5 is fixedly connected to the hole pre-embedded steel bar 8, and the reinforcement steel plate 6 attached to the outer wall of the hole and located outside the embedded pipe 5;

[0037] The hole wall support assembly 2 is arranged inside the drilled tunnel for supporting the hole wall, and it is composed of the pre-buried pipe 5 inserted in the hole wall drill hole 10 provided by the hole wall, and the wire and the described The pre-embedded steel bars 11 fixedly connected to the embedded pipe 5, and the precast concrete slabs 12 that pass through the embedded pipe 5 and...

Embodiment 2

[0043] Such as Figure 1 to Figure 8 As shown, a tunnel support for drilling and blasting + TBM combined construction, including

[0044] The opening supporting assembly 1 is arranged on the outside of the opening of the drilled tunnel for supporting the opening, and it consists of a pre-buried pipe 5 inserted in the opening hole 4 at the opening, through wire binding and the pre-embedded pipe 5. The buried pipe 5 is fixedly connected to the hole pre-embedded steel bar 8, and the reinforcement steel plate 6 attached to the outer wall of the hole and located outside the embedded pipe 5;

[0045] The hole wall support assembly 2 is arranged inside the drilled tunnel for supporting the hole wall, and it is composed of the pre-buried pipe 5 inserted in the hole wall drill hole 10 provided by the hole wall, and the wire and the described The pre-embedded steel bars 11 fixedly connected to the embedded pipe 5, and the precast concrete slabs 12 that pass through the embedded pipe 5 ...

Embodiment 3

[0050] A tunnel support for drilling and blasting+TBM combined construction, the support method includes the following steps:

[0051] Step 1. Plan the size of the tunnel according to the construction drawing, and evenly open several hole holes 4 in an arc shape on the outside of the hole, and install pre-buried pipes 5 in the holes, and then fill the holes by grouting into the pipes. Make the pre-embedded pipe 5 firmly inserted in the drill hole, and then bind two arc-shaped pre-embedded steel bars 8 at the entrance of the hole, and connect several pre-embedded pipes 5 at the entrance to form an arc-shaped reinforcement cage like structure,

[0052] Step 2: One side of the reinforced steel plate 6 is fixedly connected to the outer side wall of the hole through the fixing pin 7, the other side of the reinforced steel plate 6 passes through the pre-embedded rod 9, and the pre-embedded rod 9 passes through one end of the reinforced steel plate 6 and The pre-embedded steel bars ...

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Abstract

The invention discloses a tunnel support for drilling and blasting and TBM combined construction and a support construction method thereof. The tunnel support comprises a hole opening support assembly, a hole wall support assembly and a reinforcing support assembly. The tunnel supporting device has the beneficial effects that the tunnel opening supporting assembly, the tunnel wall supporting assembly and the reinforcing assembly are arranged, all-directional supporting of a tunnel can be achieved, and tunnel collapse is avoided; the pre-buried pipe body is provided with the pre-buried front pipe with a plurality of holes, and a drilled hole can be filled by grouting the pipe, so that the pre-buried pipe can be firmly inserted into the drilled hole; the grouting openings are formed in the prefabricated concrete slabs at the bottom ends of the two sides of the hole wall, the grout outlets are formed in the prefabricated concrete slabs at the top end of the hole wall, grouting reinforcement can be conducted from the bottom to the gaps between the prefabricated concrete slabs and the hole wall, and when grout flows out of the grout outlets, it is indicated that the grout outlets are full of the grout.

Description

technical field [0001] The invention relates to a tunnel support, in particular to a tunnel support for drilling and blasting + TBM combined construction and a support method thereof, belonging to the technical field of tunnel construction. Background technique [0002] Tunnel construction will be encountered in the construction process of hydropower, railway, highway, subway, etc. Especially in the process of tunnel excavation, how to ensure the stability of the surrounding rock of the tunnel during the construction period is especially important for the construction process. The support of the tunnel is very important for the project. Normal construction plays a very important role. Once the support structure is not well prepared, it is easy to cause problems such as landslides, affect the progress of the construction, and even endanger the lives of the staff in severe cases. [0003] For the existing tunnel support, it is often only supported for the inner wall of the tun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/08E21D9/11E21D9/00
CPCE21D11/105E21D11/107E21D11/08E21D9/006E21D9/11
Inventor 王传奇孙建平朱荣辉乔浩利王知远裴宏宇黄登侠周敏李鹏王富功戴宇
Owner CHINA FIRST HIGHWAY ENG
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