A method and system for advanced geological prediction of shield tunneling construction
A technology of advanced geological prediction and shield method, applied in the direction of seismic signal processing, etc., can solve the problems of short detection distance and low detection accuracy, and achieve the effect of reducing the limitation and solving the coupling problem of the geophone
Active Publication Date: 2018-05-25
BEIJING MUNICIPAL ENG RES INST
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Problems solved by technology
[0004] The purpose of the present invention is to solve the above-mentioned technical problems and provide a method and system for advanced geological prediction of shield tunneling construction, which solves the limitation that the detection method needs to be installed on the cutterhead of the roadheader in the construction process of the existing roadheader. And problems such as low detection accuracy and short detection distance
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[0034] Below, the substantive features and advantages of the present invention will be further described in conjunction with examples, but the present invention is not limited to the listed examples.
[0035] see figure 1 As shown, the shield tunneling method construction advanced geological prediction method of the present invention comprises the following steps:
[0036] Real-time reception of the reflected wave and transmitted wave generated by the mechanical vibration of the shield machine during the construction process at the preset position and azimuth, and the reflected wave and transmitted wave formed after encountering the reflecting interface, to form a seismic standard data file;
[0037] Real-time collection of vibration signal data when the shield machine is working and moving during the construction process;
[0038] Perform data processing and analysis on the seismic standard data file and vibration signal data to form an image of the geological conditions in ...
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The invention relates to the field of advanced geological prediction for shield tunnel construction, and discloses a method and system for advanced geological prediction during shield tunnel construction. This method forms seismic data files by collecting the reflected waves and transmitted waves generated by the mechanical vibration of the shield machine itself during the construction process of the shield machine at multiple positions in the preset position and direction when it encounters the reflection interface, and forms seismic data files. Vibration signal data, and then carry out data integration processing and analysis, so as to form an image reflecting the geological conditions ahead of the shield machine construction and output it for display. The system can continuously collect signals in real time, and does not need to install equipment at the position of the cutter head of the shield machine. Compared with the existing methods, it eliminates the limitations of installing equipment, and can effectively improve the detection accuracy and detection distance.
Description
technical field [0001] The invention relates to an advanced geological prediction method and system for shield tunneling construction. Background technique [0002] The construction method of tunnel boring machine has certain particularity and complexity, which brings huge difficulties to its advanced geological prediction. The specific performance is that the roadheader occupies most of the space behind the tunnel face, the site in front of the construction is very small, and the rotation of the cutter head in front needs to maintain a certain pressure, so the side wall behind the face basically does not have the ability to place advanced forecasting detection The conditions of excitation devices and sensors will bring certain difficulties to forecasting techniques, methods and device arrangements. For the earthquake method, the vibration of mechanical excavation is relatively large, and the impact is also great; for the electromagnetic method, the interference current and...
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IPC IPC(8): G01V1/28
Inventor 叶英张星煜侯伟清祁曚
Owner BEIJING MUNICIPAL ENG RES INST