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Shield tunneling machine cutterhead abrasion evaluation and prediction method

A prediction method and technology of shield machine, which are applied in earth-moving drilling, mining equipment, tunnels, etc., can solve problems such as poor accuracy, low reliability, and narrow application range, and achieve improved accuracy, wide application range, The effect of high accuracy

Pending Publication Date: 2022-04-22
XIAN UNIV OF POSTS & TELECOMM
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  • Summary
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Problems solved by technology

[0011] Aiming at the problems existing in the prior art, the present invention provides a method for evaluating and predicting wear of shield machine cutterheads, in particular to a method for evaluating and predicting wear of shield machine cutterheads based on Lasso regression, aiming to solve the existing problems in the prior art Problems with narrow scope of application, poor accuracy and low reliability

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  • Shield tunneling machine cutterhead abrasion evaluation and prediction method
  • Shield tunneling machine cutterhead abrasion evaluation and prediction method
  • Shield tunneling machine cutterhead abrasion evaluation and prediction method

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Embodiment Construction

[0078] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0079] Aiming at the problems existing in the prior art, the present invention provides a method for evaluating and predicting wear of a shield machine cutter head. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0080] Such as figure 1 As shown, the shield machine cutter head wear evaluation and prediction method provided by the embodiment of the present invention includes the following steps:

[0081] S101, acquiring the data sample set Data in the tunneling state of the shield machine;

[0082] S102, preprocessing the data sample set Data;

[0083] S103, calcula...

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Abstract

The invention belongs to the technical field of mechanical equipment maintenance, and discloses a shield tunneling machine cutterhead wear evaluation and prediction method, which comprises the following steps: acquiring a data sample set Data in a tunneling state of a shield tunneling machine; preprocessing the data sample set Data to obtain a data sample set Data1; calculating the equivalent abrasion loss Wm of the cutter head when the shield tunneling machine changes the cutter every time; calculating a coefficient vector qL based on Lasso regression; acquiring a data sample set Data2 of the shield tunneling machine in a to-be-tunneled state; calculating the accumulated equivalent abrasion loss WL of the cutter head of the shield tunneling machine after the tunneling mileage is L meters; and obtaining an evaluation and prediction result of shield tunneling machine cutterhead wear. The Lasso regression is adopted to establish the prediction model, the method has a regularization sparse solution screening function, features which are weak in contribution degree to a prediction result in input are removed, and therefore the multicollinearity problem generally existing in a linear regression model is eliminated, feature subsets used by the final model are more accurate, the model prediction accuracy is higher, the generalization ability is higher, and the prediction accuracy is higher. And the overall abrasion loss of the cutterhead can be evaluated and predicted conveniently.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment maintenance, and relates to a method for evaluating and predicting the wear of a shield machine cutter head, in particular to a method for evaluating and predicting the wear of a shield machine cutter head based on Lasso regression, which can be used to predict the wear of a shield machine cutter head Quantitative assessment and forecasting. Background technique [0002] At present, with the continuous acceleration of urbanization in my country, the development and utilization of urban underground space is developing rapidly. The shield tunneling method has become the main construction method of tunnel engineering due to its characteristics of safe construction technology, strong adaptability to soil layers, and little impact on the environment along the line. The shield machine drives the cutter through the cutter head to break the rock, and brings the gravel and sand into the soil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/08E21F17/00
CPCE21F17/00E21D9/003E21D9/08
Inventor 刘尧陈强龚磊常建涛孔宪光
Owner XIAN UNIV OF POSTS & TELECOMM
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