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Real-time calculation method of abrasion loss of disc cutter of hard rock tunnelling boring machine

A technology of tunnel boring machine and real-time calculation, applied in the direction of measuring devices and instruments, can solve problems such as the safety and efficiency of tunnel construction, poor working conditions of disc hob, and complicated rock breaking process, so as to achieve clear design ideas and improve Driving efficiency, logical and reasonable effect

Inactive Publication Date: 2016-02-24
MILITARY TRANSPORTATION UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the hard rock TBM tunneling process, the working conditions of the disc hob are harsh, and the rock breaking process is extremely complicated. The wear of the hob is very serious under the action of heavy load and hard rock, which has become a prominent problem that plagues the safety and efficiency of tunnel construction.
Existing detection technologies and methods are still difficult to realize real-time direct detection of hob wear during tunneling

Method used

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  • Real-time calculation method of abrasion loss of disc cutter of hard rock tunnelling boring machine
  • Real-time calculation method of abrasion loss of disc cutter of hard rock tunnelling boring machine
  • Real-time calculation method of abrasion loss of disc cutter of hard rock tunnelling boring machine

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Embodiment 1

[0044] In the tunnel engineering of this embodiment, the structural parameters of the hard rock TBM used are as follows: 38 disc-shaped hobs with a constant section of 432 mm are installed on the cutter head, that is, the initial radius R of the hob is 216 mm, and 0°<the edge of the hob cutter ring Angle 6≤5°, the sum of all hob installation radii is 62.415m. The project is constructed under hard rock conditions. The specific steps of the method for realizing the real-time calculation of hob wear during hard rock TBM excavation are as follows:

[0045] The first step is to calculate the equivalent hob cutting coefficient and depth of cut of the TBM cutter head in real time:

[0046] Firstly, the tunneling parameters collected in real time by hard rock TBM construction equipment are used, including cutterhead thrust, cutterhead torque, cutterhead speed and tunneling speed, and then the structural parameters of TBM cutterhead tools are used, including the number of cutters on th...

Embodiment 2

[0084] In the tunnel engineering of this embodiment, the structural parameters of the hard rock TBM used are as follows: 71 disc-shaped hobs of 432 mm are installed on the cutter head, that is, the initial radius R of the hob is 216 mm, and the edge angle 6 of the hob cutter ring is 20° , the sum of the installation radii of all hobs is 172.62m, and the installation radii of the cutters on each cutter position are as follows Figure 4 Shown: the cutterhead axis of the hard rock TBM cutterhead used in the tunnel engineering in this embodiment is located at the center of the cutterhead, the diameter of the cutterhead is 8800mm, and 71 432mm disc-shaped hobs are installed, and the cutter position numbers are 1, 2, 3. ..., 69, 70, 71, the larger the tool position number, the farther the tool is from the center of the cutter head; the installation radius of No. 1 tool on the cutter head is 42mm; among No. 1 to No. The installation radius difference between them is 84mm; the total i...

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Abstract

A real-time calculation method of abrasion loss of a disc cutter of a hard rock tunnelling boring machine (TBM) provided by the invention relates to a data processing method particularly suitable for specific application. From the aspect of mechanical analysis of hard rock hobbing cutter rock breaking, a relationship between a cutting coefficient and a hobbing cutter rock breaking arc length is established, and the real-time calculation method of abrasion loss of the hobbing cutter in the tunneling process of a hard rock TBM is realized through adoption of tunneling parameters automatically acquired in the work process of the hard rock TBM. The real-time calculation method comprises the steps: performing real-time calculation of an equivalent hobbing cutter cutting coefficient and a knifing of a TBM cutter; performing real-time calculation of an angle with respect to the equivalent hobbing cutter rock breaking arc length; performing real-time calculation of an equivalent hobbing cutter working radius; performing real-time determination of the abrasion loss of the equivalent hobbing cutter in the tunneling process of the hard rock TBM; and performing real-time determination of the actual abrasion loss of a hobbing cutter at any one cutter spacing on the hard rock TBM cutter. According to the invention, the real-time calculation method helps to make up the deficiencies in the prior art that abrasion of a hobbing cutter of the hard rock TBM in the tunneling process cannot be directly detected in real time and the abrasion loss of the hobbing cutter of the hard rock TBM in the tunneling process cannot be reflected.

Description

technical field [0001] The technical solution of the present invention relates to a data processing method specially suitable for a specific application, in particular to a real-time calculation method of the disc hob wear amount of a hard rock tunnel boring machine. Background technique [0002] With the rapid development of transportation infrastructure such as subways, railways and highways, and underground engineering construction such as water conservancy, coal, petroleum, mining and military, hard rock tunnel boring machines (hereinafter referred to as hard rock TBMs) have been widely used. The hob has become the main rock-breaking tool on hard rock TBMs due to its high-efficiency rock-breaking performance. In the hard rock TBM tunneling process, the working conditions of the disc hob are harsh, and the rock breaking process is extremely complicated. The wear of the hob is very serious under the action of heavy load and hard rock, which has become a prominent problem t...

Claims

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Application Information

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IPC IPC(8): G01B21/02
CPCG01B21/02
Inventor 王立辉亢一澜张茜侯振德蔡宗熙曲传咏
Owner MILITARY TRANSPORTATION UNIV PLA
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