Shield tunneling axis real-time deviation rectifying system and method based on big data

Abstract

The invention discloses a shield tunneling axis real-time deviation rectifying system and method based on big data. The system comprises a data preprocessing module, a trajectory strategy module, an oil pressure attitude module, an oil pressure optimization module, a real-time monitoring module and an automatic learning module; the system can consider factors influencing shield attitude change based on big data collected on a construction site; the trajectory strategy module provides a target position of a next construction unit; the oil pressure attitude module outputs a partition oil pressure value required for reaching the target position according to the target position; meanwhile, a shield tunneling machine oil pressure allowable output range is considered, and an oil cylinder pressure theoretical value calculated by the system is optimized; and when the calculation result of the model is abnormal, an emergency shutdown signal is output. Compared with a common axis control method,the deviation rectifying method not only can comprehensively consider factors influencing shield axis control to ensure that disturbance of surrounding soil cannot be caused in the deviation rectifying process, but also considers the stability of the model to set emergency treatment measures.

Description

technical field [0001] The invention relates to the technical field of shield machine control, in particular to a system and method for real-time deviation correction of a shield tunneling axis based on big data. Background technique [0002] During the tunneling process of the shield machine, the control effect of the tunneling posture is one of the keys that affect the quality of the tunnel construction. Due to the complex underground environment and multi-coupling between construction parameters during the construction process of the shield tunneling method, it is very difficult to establish a mathematical model between the construction environment parameters and the direct control value of the shield attitude - oil pressure. Common shield axis control methods are divided into the following three categories: [0003] (1) Axis deviation correction method based on polynomial fitting propulsion trajectory [0004] The axis control method based on polynomial fitting propuls...

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Problems solved by technology

[0009] However, the above three types of methods are mostly based on geometric fitting or construction experience. Considering the factors that affect the propulsion is relatively one-sided. It does not consider whether the deflection correction process of the shield machine will cause disturbance to the surrounding soil, and whether the output value of the model does not exceed the oil pressure of the shield machine. The maximum opening of the valve, the controller's emergency measures for abnormal situations

Therefore, the actual application effect of the above method is poor.

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