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Shield tunnel lifting hole wall penetration outward-extension type electromagnetic wave ground detecting system and application thereof

A shield tunnel, electromagnetic wave technology

Active Publication Date: 2015-09-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing detection methods mainly use ground-penetrating radar equipment to detect the full cross-section and longitudinal detection of the grouting body behind the shield tunnel wall. Since the detection device does not extend into the grouting body, its detection effect and accuracy are poor

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  • Shield tunnel lifting hole wall penetration outward-extension type electromagnetic wave ground detecting system and application thereof
  • Shield tunnel lifting hole wall penetration outward-extension type electromagnetic wave ground detecting system and application thereof

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0037] The shield tunnel hoisting hole breaks the wall and extends the electromagnetic wave ground detection system. The extended electromagnetic wave receiving probe rod 2 is assembled according to the detection range, and the transmitting source 4, the receiving source 5 and the transmission line are respectively embedded in it. The line interface of the electromagnetic wave emitting probe 1 and the extended electromagnetic wave receiving probe 2 is connected, and the extended electromagnetic wave emitting probe 1 and the extended electromagnetic wave receiving probe 2 can be placed on the shield through the hoisting hole 9 on the segment 8 In the boreholes around the tunnel, the electromagnetic wave 11 emitted by the transmitting source 4 scans the grouting body 10 and is received by the receiving source 5 .

[0038] The specific steps are ...

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Abstract

The invention relates to a shield tunnel lifting hole wall penetration outward-extension type electromagnetic wave ground detecting system. The system is composed of an outward-extension type electromagnetic wave emission detecting rod, an outward-extension type electromagnetic wave receiving detecting rod and a hole drilling geological radar, wherein the outward-extension type electromagnetic wave emission detecting rod and the outward-extension type electromagnetic wave receiving detecting rod are connected with a transmitting antenna and a receiving antenna of the hole drilling geological radar. The application of the system includes the following steps that: tomographic scanning is performed on shield tunnel backfill grout through the hole drilling geological radar; the distribution range of the shield tunnel backfill grout can be obtained through data analysis and inversion calculation; and based on field construction parameters and slurry performance, the grouting amount and grouting pressure of subsequent grouting pipes can be fed back and adjusted, and the construction quality of tunnels can be ensured. With the system adopted, the synchronous grouting effect of the shield tunnels in different strata can be detected excellently, and the grouting amount and grouting pressure of field synchronous grouting can be fed back, and therefore, a shield tunnel synchronous grouting control method can be more scientific and more scientific.

Description

technical field [0001] The invention belongs to the field of tunnel and underground engineering, and relates to a device suitable for evaluating the synchronous grouting effect of a shield tunnel and feedback to determine the on-site grouting amount and grouting pressure, in particular to a shield tunnel hoisting hole broken wall extension type electromagnetic wave ground detection system . Background technique [0002] During shield construction, there is a certain gap between the segment and the ground. In order to prevent the deformation of the ground, improve the impermeability of the tunnel, and ensure the early stability of the segment lining (uniform external force), it is necessary to adopt a reasonable grouting amount and grouting pressure. Perform synchronous grouting. At present, the determination of the grouting amount is based on the gap between the tail of the shield and considering the appropriate fullness coefficient in combination with the formation, route ...

Claims

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Application Information

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IPC IPC(8): G01V3/12E21D11/10
Inventor 周顺华宫全美张亚男耿大将陈翰
Owner TONGJI UNIV
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