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Shield machine launching sealing device

A technology of sealing device and shield machine, which is applied to mining equipment, earthwork drilling, tunnels, etc., and can solve problems such as landslides and water leakage that cannot be completely eliminated

Pending Publication Date: 2017-12-01
BEIJING NO 4 MUNICIPAL CONSTR ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are several starting technologies in use at present, and there are many commonly used technologies such as jet grouting pile reinforcement method, steel sheet pile replacement method, freezing method, etc. These traditional methods are basically feasible in stable formations, but for weak or high water formations where water leakage, end There are also many head instability phenomena, which cannot completely eliminate risks such as landslides and water leakage.

Method used

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  • Shield machine launching sealing device
  • Shield machine launching sealing device
  • Shield machine launching sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] This embodiment provides a shield machine sealing device:

[0013] A shield machine originating sealing device, comprising a hole ring beam 1 and a sealing ring plate 2, the outer diameter of the sealing ring plate 2 is smaller than the inner diameter of the hole ring beam 1, and one end in the axial direction is located inside the hole ring beam 1 , the other end is located outside the hole ring beam 1, and it is characterized in that no less than three elastic sealing capsules 3 are arranged on the sealing ring plate, and each elastic sealing capsule is circumferentially along the inner diameter and outer diameter of the sealing ring plate. set, detachably fixed on the sealing ring plate 2, at least one of which is located between the hole ring beam 1 and the sealing ring plate 2, at least two are arranged inside the sealing ring plate 2, and the two elastic sealing capsules 32 and The sealing ring plate between 33 is provided with grouting pipe 41.

[0014] Further,...

Embodiment 2

[0016] This embodiment provides a method for using the device described in Embodiment 1 to initiate a shield machine, including the following steps:

[0017] First, the sealing device described in Embodiment 1 is fixed at the hole ring beam;

[0018] Second, when the cutter head of the shield machine enters the hole, the elastic sealing capsule 31 is filled with fluid to close the gap between the shell of the device and the ring beam 1 of the hole; at the same time, the elastic sealing capsules 32 and 33 are not filled with fluid and are in a dry state , to avoid crushing the capsule when the shield machine moves forward;

[0019] Third, after the cutter head of the shield machine has completely entered the sealing device, fill the elastic sealing capsules 32 and 33 with fluid to make them full, and then open the grouting pipes 41 and 42 to fill the gaps with the grout to ensure that the excavation surface soil and groundwater outflow;

[0020] Fourth, close the grouting pip...

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Abstract

The invention provides a shield machine launching sealing device which comprises a tunnel portal ring beam and a sealing ring plate. The outer diameter of the sealing ring plate is smaller than the inner diameter of the tunnel portal ring beam; one axial end of the sealing ring plate is disposed inside the tunnel portal ring beam and the other end of the sealing ring plate is arranged outside the tunnel portal ring beam. The shield machine launching sealing device has the advantages of good sealing performance and high safety and reliability.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a starting sealing device for a shield machine. Background technique [0002] The shield starting technology refers to the reinforcement treatment of the end of the portal before the shield machine starts to excavate, especially for weak ground or high water level geological conditions, the reinforcement requirements are higher. Excavation of the portal, installation of the base and reaction frame, installation of the portal ring and water-stop curtain, etc., to ensure that the shield machine tunnels or reaches according to the design axis, but if the reinforcement effect is not good and the portal is unstable, After the start, the shield machine kowtows and the sealing effect is not good, and quality and safety accidents will still occur. The tunnel entry process of shield tunneling is the key process of tunnel construction with shield tunneling method, and the construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
CPCE21D9/0635
Inventor 汪健张海鹰郑仔弟周政关龙王京磊夏宝坤陈寅生范兆轩隋素珍
Owner BEIJING NO 4 MUNICIPAL CONSTR ENG