Device for forecasting geologies in advance during tunnel boring machine (TBM) construction by using shock signals and usage method

A technology of advanced geological forecast and vibration signal, which is applied in the field of signal recognition, can solve problems such as potential safety hazards and geological conditions that cannot be predicted in time, and achieve the effects of high detection accuracy, convenient measurement, and high measurement coupling accuracy

Inactive Publication Date: 2012-08-22
SHANDONG UNIV
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Problems solved by technology

At present, there are more and more projects using TBM in China, but when using TBM to excavate, the geolog

Method used

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  • Device for forecasting geologies in advance during tunnel boring machine (TBM) construction by using shock signals and usage method
  • Device for forecasting geologies in advance during tunnel boring machine (TBM) construction by using shock signals and usage method
  • Device for forecasting geologies in advance during tunnel boring machine (TBM) construction by using shock signals and usage method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Such as Figure 1-Figure 3 As shown, the device for geological prediction using vibration signals in the construction of TBM method, including vibration exciter 1, geophone 2, exciter telescopic slot 4, geophone telescopic slot 5 and TBM cutter head 7, vibration exciter telescopic slot 4 and geophone The telescopic slots 5 are arranged alternately on one side of the hob blades 6 on the TBM cutter head 7 , and are telescopic, and are used to place the vibration exciter 1 and the geophone 2 respectively.

[0022] The vibration exciter 1 is a hammer-type seismic source generator, which transmits the vibration signal to the vibration excitation head 10 by hitting the vibration rod 9, and then the vibration excitation head 10 transmits the vibration signal to the front rock mass.

[0023] The front end of the geophone 2 is provided with a geophone bu...

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Abstract

The invention discloses a device for forecasting geologies in advance during tunnel boring machine (TBM) construction by using shock signals and a usage method. The device comprises a TBM cutter head, wherein a plurality of groups of hob blades are arranged on the TBM cutter head along the radial direction, vibration exciter telescoping grooves and detector telescoping grooves are arranged on one side of one of the groups of hob blades at intervals, vibration exciters and detectors are correspondingly mounted in the vibration exciter telescoping grooves and the detector telescoping grooves, and the detectors are connected with a data processing terminal through signal transmission wires. During usage, the vibration exciter telescoping grooves with the vibration exciters are extended out to be closely connected with front rock masses and used as a shocking source, one ends of the detector telescoping grooves with the detectors are coated with grease, and the detector telescoping grooves are extended out to be closely connected with the front rock masses and used for receiving reflected waves. The device for forecasting geologies in advance during TBM construction by using shock signals has the advantages of being simple in structure, high in detection accuracy, anti-interference, convenient to measure, telescopic, high in measurement coupling accuracy and the like.

Description

technical field [0001] The invention relates to a signal identification technology, in particular to a device for advanced geological prediction using vibration signals in TBM construction and a method for using it. Background technique [0002] There are a large number of tunnel projects in the field of water conservancy, hydropower and transportation in my country. Geological disasters in tunnel engineering are the key factors restricting tunnel construction. Often due to the unknown geological conditions in front of the tunnel, unpredictable geological disasters often occur, such as water inrush, mud inrush, collapse, rock formation, etc. Explosion and harmful gases, etc. Once a disaster occurs, the normal construction will be interrupted due to the destruction of machinery and equipment, flooding of tunnels, or severe casualties and huge economic losses, and even some underground projects will be forced to suspend construction or reroute. TBM (Tunnel Boring Machine) tunn...

Claims

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Application Information

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IPC IPC(8): G01V1/00
Inventor 李术才薛翊国李树忱张庆松苏茂鑫邱道宏刘斌田昊
Owner SHANDONG UNIV
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