Shield attitude position deviation prediction method

Abstract

The invention belongs to the technical field of shield tunneling, and particularly relates to a shield attitude position deviation prediction method. According to the method, various parameters of a completed shield construction project serve as source domain data and are trained in a pre-training model, relevant parameters of a feature extraction layer in the pre-training model are extracted, two new full connection layers are overlaid behind the feature extraction layer, and a shield attitude deviation prediction model is formed; taking each parameter in the current shield construction project as target data, and training on the shield attitude deviation prediction model by using the target data so as to obtain prediction of shield tunneling deviation; and various parameters of the completed shield construction project are used as source domain data, so that enough training data for training in the initial stage of shield construction is ensured, and the prediction effect of the shield attitude deviation prediction model is further ensured. The situation that the prediction effect is inaccurate due to the fact that only a small amount of data is used for training in the initial stage of the shield is avoided.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling, and in particular relates to a method for predicting a shield posture position deviation. Background technique [0002] During the excavation process of the shield machine, some unpredictable factors such as blade eccentric load, stratum change and the interference of the self-weight of the shield often cause the deviation of the attitude position of the shield machine, causing the shield machine to move in a serpentine manner in the tunnel. When the offset exceeds the allowable range, the shield must be adjusted in time to return to the preset orbital axis. However, the current control of the position of the shield tunneling attitude lacks effective auxiliary means. It is believed that there are many uncertain factors in the adjustment of the operation, such as the arbitrariness of the timing of the operation and the adjustment force, so that the accuracy and efficiency of the deviation...

AI Technical Summary

Problems solved by technology

However, the current control of the position of the shield tunneling attitude lacks effective auxiliary means. It is considered that there are many uncertain factors in the adjustment of the operation, such as the arbitrariness of the timing of the operation and the adjustment force, so that the accuracy and efficiency of the deviation correction cannot be guaranteed, which is easy to cause The offset of the serpentine tunneling of the shield machine is further enlarged, which seriously affects the construction quality and cycle, resulting in greater economic losses

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