Tunneling machine and construction method of tunneling machine

A technology of tunnel boring machine and construction method, which is applied in the direction of tunnels, earthwork drilling and mining, mining equipment, etc. It can solve the problems of not being able to achieve construction efficiency and economy, uneven geological conditions, increasing construction costs, etc., and achieve good economic benefits , Balanced force, saving construction cost

Inactive Publication Date: 2018-10-19
HUANENG YARLUNG TSANGPO RIVER HYDROPOWER DEV INVESTMENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, because the excavation distance of the tunnel is usually relatively long, the geological conditions of the strata traversed by the tunnel line are often not uniform. Among them, in the medium-hard rock formation with complete surrounding rock structure, the tunnel wall has better stability and safety, and there is no need to use assembled segments to line the tunnel wall. In this case, Using the shield tunnel boring machine for construction and still assembling segments will greatly increase the construction volume, low construction efficiency, and increase construction costs, so that the best construction efficiency and economy cannot

Method used

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  • Tunneling machine and construction method of tunneling machine
  • Tunneling machine and construction method of tunneling machine
  • Tunneling machine and construction method of tunneling machine

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Embodiment 1

[0042] Such as Figure 1 to Figure 5 As shown, a tunnel boring machine provided in this embodiment includes a boring machine body and a tightening shield 2, a propulsion cylinder 3 is connected to the boring machine body, and the tightening shield 2 is arranged on the propulsion cylinder 3 The rear is used to tighten the tunnel to provide reverse thrust to the propulsion cylinder 3 .

[0043]The tunnel boring machine provided in this embodiment includes a boring machine body and a tensioning shield 2. A propulsion cylinder 3 is connected to the boring machine body. The tensioning shield 2 is used to support the propulsion cylinder 3 and bear the reverse thrust of the propulsion cylinder 3. During the construction of a tunnel with normal or better conditions, under the condition that the tunnel wall still has good safety and stability when the segment 6 is not assembled for lining, the tension shield 2 is directly braced on the tunnel walls on both sides of the tunnel, Rely on...

Embodiment 2

[0061] This embodiment also provides a tunnel boring machine, such as Figure 6 to Figure 14 As shown, the tunnel boring machine includes a boring machine body and a tightening shield 2, a propulsion cylinder 3 is connected to the boring machine body, and the tightening shield 2 is arranged behind the propulsion cylinder 3 for tightening Tunnel to provide reverse thrust for the propulsion cylinder 3, the outer side of the tension shield 2 is provided with a transition ring 4, the transition ring 4 is used to axially support the segment 6 assembled on the tunnel wall to balance the segment 6 axial force.

[0062] A transition ring 4 is provided, and the transition ring 4 is used to axially support the segment 6 assembled on the tunnel wall to balance the axial force of the segment 6 . In the transition section with segment 6 and without 6 construction, the ring segment 401 of the transition ring 4 can support the segment 6 under the support of the supporting structure, so as t...

Embodiment 3

[0079] A construction method of a tunnel boring machine, the method adopts the above-mentioned tunnel boring machine, and the method comprises the following steps:

[0080] Step 1. Install the body of the roadheader, the propulsion cylinder and the tension shield so that the tension shield is located at the rear of the propulsion cylinder; during the transition stage from construction with segments to no segments, the rear end of the tension shield 2 should be in line with the assembled The distance between the front end of the segment 6 on the hole wall is greater than or equal to n, where n is the adjustment width;

[0081] Step 2, tightening the cylinder 202 to push the shoe 201 to tighten on the cave wall;

[0082] Step 3: Start the body of the roadheader and the propulsion cylinder 3, and the propulsion cylinder 3 is stretched out and supported on the tension shield 2 for propulsion;

[0083] Step 4, completing the excavation distance of one excavation cycle, stopping th...

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Abstract

The invention discloses a tunneling machine. The tunneling machine comprises a heading machine body and a tightly supporting shield, wherein the heading machine body is connected with a propulsion oilcylinder, the tightly supporting shield is arranged in back of the propulsion oil cylinder and used for providing reaction thrust for the propulsion oil cylinder, and the outer side of the tightly supporting shield is provided with transition rings used for axially supporting duct pieces spliced on the wall of a tunnel to balance the axial load of the duct pieces. The tunneling machine has the advantages that during tunnel construction with better geological conditions, duct piece splicing is not performed on the wall of the tunnel, the tunneling machine still can achieve normal tunneling andstepping, the construction efficiency can be improved, and the construction cost is reduced; in a transition section between construction with duct pieces and construction without duct pieces, ring pieces of the transition rings can support the duct pieces under the support of a supporting mechanism to balance the axial load of the duct pieces so that the load of the duct pieces is balanced so asto keep stability. The provided construction method of the tunneling machine does not need to splice duct pieces on the wall of the tunnel in the same way, the normal tunneling and stepping can be achieved, the construction efficiency can be improved, and the construction cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of tunnel boring equipment, and in particular relates to a tunnel boring machine and a construction method of the tunnel boring machine. Background technique [0002] Tunnel boring machine (TBM) is a large-scale complete set of construction equipment specially used for excavating tunnels in rock formations. Among them, shield tunnel boring machines need to assemble concrete segments during the construction process to provide propulsion or stepping force for the equipment. At the same time, assembling segments on the tunnel wall can also be used to line the tunnel wall to improve the stability of the tunnel wall and ensure the safety of the tunnel. [0003] During the construction of the shield tunnel boring machine, the propulsion cylinder needs to be supported on the segments laid along the tunnel during the forward advancement or stepping process of the propulsion cylinder, and the reaction force of the pr...

Claims

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Application Information

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IPC IPC(8): E21D9/087E21D9/06
CPCE21D9/0621E21D9/0879
Inventor 李超毅程永亮杨佐斌刘峰侯秉军秦鹏翔刘绍宝彭正阳唐崇茂
Owner HUANENG YARLUNG TSANGPO RIVER HYDROPOWER DEV INVESTMENT CO LTD
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