Method, device and equipment for predicting abrasion loss of hob and shield tunneling machine

Under complex geological conditions, combine the strength, penetration and geometric parameters of rock, establish a predictive model of rolling knife wear, solve the problem of inaccurate grinding of roller wear in existing technologies, improve the accuracy of prediction accuracy, and improve the accuracy of prediction accuracy And construction efficiency.

CN119378139AActive Publication Date: 2025-01-28SHANTOU UNIV
View PDF 4 Cites 2 Cited by

Patent Information

Application Number
CN202411269527.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-11
Publication Date
2025-01-28
Estimated Expiration
2044-09-11

AI Technical Summary

Technical Problem

Under complex geological conditions, it is difficult for the prior art to accurately predict the amount of hob wear, resulting in increased construction difficulty, delays in construction and increased construction risks.

Method used

Determine the first positive force of the rolling knife and rolling rock through the strength of the rock strength, penetration, and geometric parameters of the rolling knife, combined with the geometric parameters, internal friction angles, adhesion, penetration, roller and slag, and the slag soil The mechanical effects of the intercourse determine the second positive force of the rolling knife sliding and cutting soil layer. Based on the energy effects of the two and the hardness and wear coefficient of the knife ring, the basic roller wear model is established, and the amount of wear is predicted according to the number of shields.

Benefits of technology

It improves the predictive accuracy of the amount of wear of the rolling knife, reduces the error between the actual wear, and reduces the construction risk and delay of construction.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119378139A_ABST
    Figure CN119378139A_ABST
Patent Text Reader

Abstract

The invention discloses a prediction method, device and equipment for the abrasion loss of a hob and a shield tunneling machine, and relates to the technical field of tunnel construction, and the prediction method for the abrasion loss of the hob comprises the steps that first positive force borne by rolling rock breaking of the hob is determined through rock strength, penetration and geometrical parameters of the hob; determining a second positive force borne by the hob when the hob slides to cut the soil layer according to the geometrical parameters, the internal friction angle, the cohesive force and the penetration of the hob and the mechanical action between the hob and the muck; determining a basic hob abrasion loss model based on the sum of the first energy action of the hob in the rock stratum and the second energy action of the hob in the soil layer, the hob ring hardness of the hob and the abrasion coefficient; and predicting the accumulated abrasion loss of the hob according to the shield tunneling ring number and the basic hob abrasion loss model. By executing the steps, the prediction accuracy of the abrasion loss of the hob can be improved.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Method for determining wear loss of composite stratum shield hob

    CN108256168A

  • Cutter changing control method for hob of shield tunneling machine in composite stratum

    CN111626623A

  • Shield hob service life evaluation index construction method and system, terminal and medium

    CN115563760A

  • Method for predicting abrasion of hob of slurry balance shield machine based on BP (Back Propagation) neural network

    CN118468134A

Cited By

  • Method and system for determining impact load of shield hob in composite stratum with soft upper part and hard lower part

    CN121257367A

  • A method and system for determining the impact load of a shield cutter in a soft-over-hard composite stratum

    CN121257367B