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Method for dismantling shield negative ring duct pieces in transverse channel of vertical shaft

A technology of negative ring segments and cross passages, which is applied in the field of dismantling negative ring segments of shield tunnels in vertical shaft cross passages, can solve problems such as hidden safety hazards, impact on construction efficiency, inconvenient movement, time-consuming and laborious problems, and achieve simple procedures and ensure safety sexual effect

Inactive Publication Date: 2020-08-18
中建八局轨道交通建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After using the triangular gantry to remove one ring segment, it is necessary to move the triangular gantry to the next ring in a small space, which not only is inconvenient to move, time-consuming and laborious, but also affects the construction efficiency, and there are potential safety hazards

Method used

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  • Method for dismantling shield negative ring duct pieces in transverse channel of vertical shaft
  • Method for dismantling shield negative ring duct pieces in transverse channel of vertical shaft
  • Method for dismantling shield negative ring duct pieces in transverse channel of vertical shaft

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] refer to Figure 1 to Figure 4 , shows a top view of the translation step of the method for removing the negative ring segment of the shield tunnel in the vertical shaft cross passage of the present invention. to combine Figure 1 to Figure 4 As shown, the removal method of the shield negative ring segment in the shaft cross passage of the present invention, the cross passage 10 is vertically connected to the bottom of the shaft 11, and the removal method includes:

[0036] Connecting a plurality of negative ring segments 200 located in the transverse channel 10 to form a negative ring segment group 20;

[0037] Release the connection at the two ends of the negative ring segment group 20;

[0038] Provide a second pushing structure 60, support the second pushing structure 60 on the side of the negative ring segment group 20 away from th...

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Abstract

The invention relates to a method for dismantling shield negative ring duct pieces in a transverse channel of a vertical shaft. The transverse channel vertically communicates with the bottom of the vertical shaft, and the dismantling method comprises the following steps that a plurality of negative ring duct pieces in the transverse channel are connected to form a negative ring duct piece set; connection of the two ends of the negative ring duct piece set is relieved; a second pushing structure is provided, the second pushing structure is supported on the side, away from the vertical shaft, ofthe negative ring duct piece set, and the negative ring duct piece set is horizontally moved into the vertical shaft towards the vertical shaft through the second pushing structure; and hoisting equipment is provided, the hoisting equipment is arranged above the vertical shaft, and the negative ring duct piece set is hoisted out of the vertical shaft upwards from the interior of the vertical shaft through the hoisting equipment. According to the method, the plurality of negative ring duct pieces are integrally translated, the duct pieces do not need to be dismantled one by one by repeatedly moving a tool frame in the narrow transverse channel, and safety and simplicity are achieved.

Description

technical field [0001] The invention relates to the field of shield construction, in particular to a method for removing negative ring segments of a shield in a vertical shaft cross passage. Background technique [0002] The negative ring segment is also called the temporary segment. When the shield machine starts, a ring segment is installed between the reaction frame and the shield jack to give the shield machine the force to advance forward. When the shield machine starts to excavate, the forward movement of the shield machine needs to provide reaction force for the excavation of the shield machine through the reaction frame at the back. The reaction frame is generally supported on the reinforced concrete frame at the bottom of the shield starting shaft. When the shield machine has excavated a certain distance, the reaction frame can be removed. [0003] In the prior art, shield tunnels are generally constructed through shield tunnels. When the main line of the tunnel ...

Claims

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Application Information

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IPC IPC(8): E21D11/40E21D11/08
CPCE21D11/08E21D11/40
Inventor 王孟龙杜亚非郑永杰耿晓亮
Owner 中建八局轨道交通建设有限公司
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