Method for determining torque of cutter head of shield tunneling machine by using principal component analysis-long-short memory model

Abstract

The invention provides a method for determining the torque of a cutter head of a shield tunneling machine by using a principal component analysis-long-short memory model. The method comprises the following steps of: S1, acquiring geological parameters and shield construction parameters of shield tunneling machine construction, and normalizing the geological parameters and the shield construction parameters; S2, reducing the dimension of the normalized data by adopting a principal component analysis method, and dividing the dimension-reduced data and target parameters, namely the torque of the cutter head of the shield tunneling machine into a training set and a test set; S3, establishing a long-short memory neural network model, inputting the training set into the long-short memory neural network model, adjusting model parameters to enable the model to converge, verifying the model by using the test set, and storing the optimal model; and S4, inputting the actually measured geological parameters and shield construction parameters into the optimal model to obtain the target parameters, namely the torque of the cutter head of the shield tunneling machine. According to the method, the torque of the cutter head of the shield tunneling machine can be quickly and accurately determined according to the construction parameters and the geological parameters of the shield tunneling machine, and shield construction can be better guided.

Description

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AI Technical Summary

Benefits of technology

This invention relates to an improved system for calculating the force required during drilling operations on metal pipes that includes analyzing various factors like pipe dimensions, bit depths, hole sizes, etc., while also taking into account environmental conditions such as temperature and pressure. By doing this, it provides more accurate results with less wasted effort compared to previous methods which were based only on specific values.

Problems solved by technology

This patented describes how cutting tools like hydraulic shovel (HSC) or trenching equipment have been developed over many years but they still face challenges during operation because current settings may lead to poor performance and increased risk of damage when operating at certain depth levels. There is also concern about improving the design of HCS' s own cutter heads based upon factors such as geometry and material characteristics. Current techniques involve trial and error fitting values which require significant effort and resources compared to realistic measurements collected through simulations.

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