Prediction method for TBM disc cutter wear

A prediction method and hob technology, which are applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as difficulty in predicting hob consumption, and achieve the effect of accurate prediction

Inactive Publication Date: 2018-10-26
ZHENGZHOU UNIV
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AI Technical Summary

Problems solved by technology

[0005] The invention provides a prediction method for TBM hob wear, proposes the concept of comprehensive wear coefficient of the cutter ring and establishes a hob wear prediction model, and solves the technical problem that it is difficult to predict hob consumption in TBM construction

Method used

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  • Prediction method for TBM disc cutter wear
  • Prediction method for TBM disc cutter wear
  • Prediction method for TBM disc cutter wear

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Experimental program
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Embodiment 1

[0044] A kind of TBM hob wear prediction method, comprises the following steps:

[0045] Step 1: Determine the common and easily measurable data information such as the excavation parameters, cutter ring wear and cutter ring characteristics obtained from field measurements and records during the TBM excavation process, as shown in Table 1:

[0046] Table 1. Parameters related to the comprehensive wear coefficient calculation model

[0047]

[0048] Among them, the normal wear and tear replacement standards of each hob are as follows:

[0049]1~6# center cutter, 24~27# front hob, 28~32# side hob allow maximum wear h of 25mm, 7~23# front hob allow maximum wear h of 30mm, 33~35# side The allowable maximum wear h of the hob is 20mm, and the allowable maximum wear h of the 36~37# side hobs is 13mm; in order to avoid overloading of the hob, the height difference of each knife is not greater than 15mm;

[0050] Step 2: Propose the concept of comprehensive wear coefficient, and e...

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Abstract

The invention belongs to the technical field of TBM disc cutter wear, and particularly relates to a prediction method for TBM disc cutter wear. The prediction method comprises the following steps thattunneling parameters, cutter ring wear losses and cutter ring characteristics in the TBM tunneling process are determined; a cutter ring comprehensive wear coefficient computing model is built; and aTBM effective tunneling distance prediction model based on cutter ring comprehensive wear coefficients is built; and an influence mechanism that the disc cutter ring wear is influenced by various factors on the condition that the geological conditions are the same as the cutter ring properties is analyzed. According to the prediction method, the concept of the cutter ring comprehensive wear coefficients is proposed, a disc cutter wear prediction model is built, and the technical problem that in TBM construction, the disc cutter consumption is difficult to predict is solved.

Description

technical field [0001] The invention belongs to the technical field of TBM hob wear, and in particular relates to a prediction method for TBM hob wear. Background technique [0002] TBM tunnel construction has the advantages of long construction distance, fast construction speed, good tunnel quality, low labor intensity, and good working environment. It has become the first choice for long tunnel construction. TBM uses disc-shaped hobs to break rocks. During the rock breaking process, due to rock friction and impact of rock blocks, the cutter ring will inevitably wear, including normal wear and abnormal damage. Normal wear refers to the process in which the cutter ring is uniformly reduced in the diameter direction, and abnormal damage mainly includes cutter ring breakage, edge chipping, edge curling, and partial wear. When the normal wear of the cutter ring reaches a certain level or abnormal damage occurs, the hob must be replaced. Otherwise, the load on other cutters on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 闫长斌杨继华姜晓迪
Owner ZHENGZHOU UNIV
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