Advanced grouting reinforcement construction method in foundation hole of earth pressure balance shield underneath pass building

An earth pressure balance shield and advanced grouting technology, which is used in earth drilling, underground chamber, wellbore lining, etc.

Active Publication Date: 2021-06-08
NO 4 ENG CO LTD OF CHINA RAILWAY NO 9 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a construction method of advance grouting reinforcement in the foundation hole

Method used

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  • Advanced grouting reinforcement construction method in foundation hole of earth pressure balance shield underneath pass building
  • Advanced grouting reinforcement construction method in foundation hole of earth pressure balance shield underneath pass building
  • Advanced grouting reinforcement construction method in foundation hole of earth pressure balance shield underneath pass building

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Embodiment Construction

[0025] The present application will be described in detail below with reference to the accompanying drawings and embodiments. Each example is provided by way of explanation of the application, not limitation of the application. In fact, those skilled in the art will recognize that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield a still further embodiment. Accordingly, it is intended that the present application cover such modifications and variations as come within the scope of the appended claims and their equivalents.

[0026] In the description of this application, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientation or positional relationship indicated by "top", "bottom", etc. is based on the orien...

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Abstract

The invention belongs to the technical field of drilling of soil layers or rocks, and provides an advanced grouting reinforcement construction method in a foundation hole of an earth pressure balance shield underneath pass building. The method comprises the following steps that: a shield tunneling machine is stopped in a position, with a horizontal distance of 12m from a middle shield grouting hole, in a reinforcement area; a grabbing head of a pipe piece assembly machine of the shield tunneling machine is rotated to the bottom of the shield tunneling machine, and a drilling machine is mounted on the pipe piece assembly machine; facing to a tunnel face of the foundation hole, the drilling machine is used for drilling holes in the tunnel face and embedding sleeve valve pipes, and shield tail sealing grease is adopted to block reserved grouting holes; after the sleeve valve pipes are embedded in all the drilled holes, an advanced grouting system of the shield tunneling machine is used for synchronously grouting all the sleeve valve pipes; and after all the drilled holes are grouted by 1 hour and slurry is solidified, the shield tunneling machine is forwards pushed by 12m for secondary circular grouting until the reinforcement area is totally finished.

Description

technical field [0001] The application belongs to the technical field of soil layer or rock drilling, relates to the technical field of shield construction, and in particular to an advance grouting reinforcement construction method for an earth pressure balance shield passing under a building foundation hole. Background technique [0002] With the substantial improvement of my country's comprehensive national strength and building construction level, the core strength of urban subway construction has tended to shield construction. Due to the increasing traffic pressure in the city center, more and more subway constructions are located in the city center area. During the shield tunneling construction process, there will be many dangerous sources under the tunnel, which need to be reinforced accordingly. When the ground does not have the reinforcement conditions Or when the construction conditions are relatively complicated, it will cause great safety hazards to our constructi...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D9/06E21D11/10E21D11/08
CPCE21D9/001E21D9/06E21D9/0609E21D11/10E21D11/08Y02E10/20
Inventor 佟方硕尹苏江刘晓迪陈英楠崔广宇孟阳张凯王怀东
Owner NO 4 ENG CO LTD OF CHINA RAILWAY NO 9 GRP
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