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Shield TBM attitude deviation early warning method

A shield and attitude technology, which is applied in prediction, earthwork drilling, instruments, etc., can solve problems such as low alarm efficiency and untimely alarm of shield TBM attitude deviation, so as to improve alarm efficiency, reduce alarm processing burden, and improve The effect of construction quality

Active Publication Date: 2020-03-31
CHINA RAILWAY CONSTR HEAVY IND
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Problems solved by technology

[0008] The purpose of the present invention is a multi-level early warning method for shield TBM attitude deviation based on monitoring parameter trend + N-step delay alarm, which is used to solve the current shield TBM attitude The problem of untimely offset alarm and low alarm efficiency

Method used

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  • Shield TBM attitude deviation early warning method

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Embodiment 1

[0048] see Figure 1 ~ Figure 3 , a shield TBM attitude deviation early warning method, the specific steps are as follows:

[0049] S1. Carry out moving average filtering on the attitude parameter values ​​of the TBM of the shield machine acquired in real time, and obtain the time series X of the filtered values.

[0050] Due to the high vibration frequency of the shield TBM during the excavation process, the attitude parameter values ​​collected by the guidance system have large noise, which seriously affects the judgment of the offset trend of the shield TBM attitude. The moving average filtering adopted by the invention has a good suppression effect on periodic interference and high smoothness, is suitable for high-frequency oscillation systems, and has an obvious filtering effect on TBM attitude parameter values ​​of shield machines. The implementation method is as follows: M continuous sampling values ​​are regarded as a queue, and the length of the queue is fixed as M. ...

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Abstract

The invention provides a shield TBM posture deviation early warning method. The method comprises the following steps: S1, carrying out moving average filtering on shield TBM attitude parameter valuescollected in real time, and obtaining a filtering value time sequence X; s2, constructing an ARMA model, and obtaining a trend change rate Rt at the current moment; s3, according to the the current fuselage deviation angle and the fuselage deviation rectifying speed, obtaining the nose continuous deviation time trest; s4, obtaining a current trend value Tt in combination with the trend change rateRt at the current moment and the nose continuous offset time trest; s5, comprehensively comparing the current filtering value Xt + the current trend value Tt with a preset threshold Threshold1 to obtain an early warning state value St at the current moment; s6, according to the N-step delayed alarm strategy, obtaining the current alarm state and updating the current alarm state to a shield TBM operation interface. By means of the shield TBM attitude parameter filtering method, the shield TBM attitude deviation trend can be analyzed, deviation over-limit can be captured in advance, an alarm isgiven, moving average filtering is conducted on shield TBM attitude parameter values collected in real time, and noise and collection errors are reduced.

Description

technical field [0001] The invention relates to the technical field of shield tunnel construction risk management, in particular to a shield TBM attitude deviation early warning method. Background technique [0002] With the continuous improvement of the level of tunnel construction, the quality of tunnel construction has correspondingly higher requirements, and the key point to ensure the quality of tunnel construction is to ensure the accuracy of the tunneling trajectory. At present, the horizontal and vertical parameters of the shield TBM are mainly measured by the guidance system. The guidance system can automatically measure the tunneling attitude parameters of the shield TBM, with high real-time performance. However, the current guidance system only shows the tunneling posture of the current equipment in the ground, and does not directly control the tunneling machine to adjust the position and posture in real time. When the operator fails to find out the attitude devi...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/08E21D9/06
CPCG06Q10/04G06Q50/08E21D9/06
Inventor 刘飞香秦念稳施浪杜义康谭新张雪荣
Owner CHINA RAILWAY CONSTR HEAVY IND
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