CN-121977773-A - Cutter head abrasion detection method and system based on shield tunneling vibration wave field analysis

CN121977773ACN 121977773 ACN121977773 ACN 121977773ACN-121977773-A

Abstract

The invention belongs to the technical field of shield tunneling machine cutterhead wear detection, and provides a cutterhead wear detection method and a cutterhead wear detection system based on shield tunneling vibration wave field analysis, wherein the method comprises the steps of dividing a shield tunneling machine soil bin partition plate into a plurality of monitoring areas; the method comprises the steps of obtaining vibration signals of a shield tunneling machine in different areas in a tunneling state, determining parameters of vibration sensors arranged on a shield tunneling machine soil bin partition board based on time-frequency characteristics of the obtained vibration signals, screening sensitive areas for vibration energy transmission on the shield tunneling machine soil bin partition board according to the obtained cutter head vibration signals, distributing the vibration sensors on the sensitive areas based on the determined vibration sensor parameters to obtain an optimal observation array, obtaining vibration sensor signals of a shield tunneling process on the optimal observation array, extracting multidimensional signal characteristics related to cutter head cutting states based on the vibration sensor signals, and obtaining cutter head abrasion states according to the multidimensional signal characteristics and a cutter head abrasion detection model.

Inventors

WANG JING
SONG HUAGUO
BA XINGZHI
ZHOU HONGWEI
LI ZHUOYANG
WU PENGBO
FANG YIHANG
ZHANG YANHUAN
ZHANG YIJIE
GUO HONGXIA

Assignees

山东大学
中铁十局集团有限公司
中铁(广州)投资发展有限公司

Dates

Publication Date: 20260505
Application Date: 20260202

Claims (10)

1. The cutter head abrasion detection method based on shield tunneling vibration wave field analysis is characterized by comprising the following steps of: Dividing a shield machine soil bin partition plate into a plurality of monitoring areas; obtaining vibration signals of the shield machine in different areas in a tunneling state; Based on the time-frequency characteristics of the obtained vibration signals, determining parameters of vibration sensors arranged on a soil bin partition board of the shield machine; Screening sensitive areas for vibration energy transmission on a soil bin partition plate of the mechanism according to the acquired cutter head vibration signals; Distributing vibration sensors on the screened sensitive areas based on the determined vibration sensor parameters to obtain an optimal observation array; Acquiring a vibration sensor signal of a shield tunneling process on the obtained optimal observation array, and extracting multidimensional signal characteristics related to the cutting state of the cutterhead based on the acquired vibration sensor signal; and obtaining the cutter wear state according to the extracted multidimensional signal characteristics and the cutter wear detection model, and finishing cutter wear detection based on shield tunneling vibration wave field analysis.
2. The cutterhead abrasion detection method based on shield tunneling vibration wave field analysis according to claim 1, wherein vibration sensor signals are collected for a long time through vibration sensors in an obtained optimal observation array in the shield tunneling process, denoising processing is conducted on the obtained vibration sensor signals, and characteristic indexes which are strongly related to cutterhead cutting states are extracted from three dimensions of a time domain, a frequency domain and a time-frequency domain respectively on the vibration sensor signals after denoising processing, so that multidimensional signal characteristics are obtained.
3. The cutter head abrasion detection method based on shield tunneling vibration wave field analysis according to claim 2, wherein the amplitude mean value, the peak value and the fluctuation range of the vibration sensor signal are calculated through time domain analysis, frequency domain features are extracted through Fourier transformation, and characteristic parameters related to abrasion are identified through a wavelet transformation isochronous frequency analysis method.
4. The cutter head abrasion detection method based on shield tunneling vibration wave field analysis according to claim 1, wherein a machine learning algorithm is adopted in the cutter head abrasion detection model, a mapping relation database of cutter head abrasion and multi-dimensional signal characteristics is obtained based on the cutter head abrasion detection model, the extracted multi-dimensional signal characteristics are input into the cutter head abrasion detection model, shield tunneling parameters are fused, and real-time interpretation and grade judgment of the cutter head abrasion state are achieved.
5. The cutter head abrasion detection method based on shield tunneling vibration wave field analysis is characterized by comprising the steps of accumulating vibration data under different stratum and abrasion degrees to form a vibration data set, collecting vibration data under different abrasion states to establish a database, extracting time domain and frequency domain characteristics, adopting a support vector machine algorithm, taking main frequency offset, high frequency energy duty ratio and other characteristics as input, taking abrasion grade as output, optimizing model parameters through cross verification, inputting real-time characteristics into a support vector machine model, outputting abrasion grade probability distribution, and comprehensively judging the abrasion grade of the cutter head by combining the shield tunneling parameters.
6. The cutter head abrasion detection method based on shield tunneling vibration wave field analysis, as claimed in claim 1, is characterized in that in the process of screening sensitive areas, according to the obtained analysis results of vibration signals of shield machines in different areas in a tunneling state, sensitive areas and non-sensitive areas of vibration energy transmission are identified, the position with the highest relevance between frequency characteristic change and cutter head cutting working conditions is screened out and used as a core monitoring point, and an optimal observation array is arranged with the screened core monitoring point as the center.
7. Cutter head abrasion detection system based on shield tunneling vibration wave field analysis, which is characterized by comprising: the division module is configured to divide the shield machine soil bin partition plate into a plurality of monitoring areas; The acquisition module is configured to acquire vibration signals of the shield machine in different areas in a tunneling state; the determining module is configured to determine parameters of vibration sensors arranged on a shield machine soil bin partition plate based on time-frequency characteristics of the acquired vibration signals; the screening module is configured to screen a sensitive area for vibration energy transmission on the soil bin partition plate of the mechanism according to the acquired cutter head vibration signals; A layout module configured to layout vibration sensors on the screened sensitive areas based on the determined vibration sensor parameters, resulting in an optimal observation array; An extraction module configured to acquire vibration sensor signals of a shield tunneling process on the obtained optimal observation array, and extract multidimensional signal features related to a cutterhead cutting state based on the acquired vibration sensor signals; The detection module is configured to obtain the cutter wear state according to the extracted multidimensional signal characteristics and the cutter wear detection model, and complete cutter wear detection based on shield tunneling vibration wave field analysis.
8. A computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of a cutterhead wear detection method based on shield tunneling vibration wave field analysis as claimed in any one of claims 1-6.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and running on the processor, characterized in that the processor implements the steps of the cutterhead wear detection method based on shield tunneling vibration wave field analysis as claimed in any one of claims 1-6 when executing the program.
10. A computer program product comprising software code, characterized in that a program in said software code performs the steps of the cutterhead wear detection method based on shield tunneling vibration wave field analysis according to any of claims 1-6.

Description

Cutter head abrasion detection method and system based on shield tunneling vibration wave field analysis Technical Field The invention belongs to the technical field of shield tunneling machine cutterhead wear detection, and particularly relates to a cutterhead wear detection method and system based on shield tunneling vibration wave field analysis. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. The shield tunneling machine is a tunnel tunneling machine adopting a shield tunneling method, integrates advanced technologies such as mechanical, electrical, hydraulic, optical, network, automatic control, sensing, information and the like into a whole, has the functions of excavating and cutting soil body, conveying dregs, lining segments, guiding and correcting errors and the like, and the construction method of the shield is that the tunneling machine constructs (lays) a 'shield' of a tunnel (referred to as a supporting segment) while tunneling. The shield tunneling machine is used as large tunneling equipment for tunnel construction, and the cutter performs rock stratum cutting excavation under the rotation action of the cutter head. The cutterhead is a core component of the shield machine, and the structural form, the strength and the overall rigidity of the cutterhead directly influence the speed and the cost of construction excavation, so that maintenance and treatment are difficult after faults. Therefore, it is very important to timely and effectively monitor the abrasion of the cutterhead so as to avoid the expansion of the fault of the cutterhead caused by the damage of the cutterhead, and scientific and accurate guidance can be provided for the shield tool changing process. At present, the judgment of the wear degree of the cutterhead is mainly based on abnormal analysis of shield tunneling parameters, but has the defects that on one hand, the judgment is seriously dependent on manual experience, misjudgment is extremely easy to cause, the accuracy is difficult to meet the actual requirements of engineering, on the other hand, the manual bin opening cost and risk are extremely high, and the bin opening cost and risk are extremely easy to rise by adopting manual experience judgment. Meanwhile, the cutter head abrasion monitoring equipment can be mounted on the shield tunneling machine in advance, abrasion detection of the cutter head is achieved in the tunneling process, the shield tunneling machine is required to be designed and modified in a targeted mode, time and labor are wasted, meanwhile, equipment reliability is difficult to guarantee, and maintenance cost is high. Disclosure of Invention In order to solve the problems, the invention provides a cutter head abrasion detection method and a cutter head abrasion detection system based on shield tunneling vibration wave field analysis, which adopt a vibration sensor mounted on a shield machine to sense and analyze cutter head vibration characteristics in real time in the shield rapid tunneling process, acquire nondestructive and non-warehouse-opening detection of the cutter head abrasion degree, further realize the detection of cutter head abrasion under the shield normal tunneling condition, reduce the monitoring cost and enhance the detection precision. According to some embodiments, the first scheme of the invention provides a cutter head abrasion detection method based on shield tunneling vibration wave field analysis, which adopts the following technical scheme: a cutter head abrasion detection method based on shield tunneling vibration wave field analysis comprises the following steps: Dividing a shield machine soil bin partition plate into a plurality of monitoring areas; obtaining vibration signals of the shield machine in different areas in a tunneling state; Based on the time-frequency characteristics of the obtained vibration signals, determining parameters of vibration sensors arranged on a soil bin partition board of the shield machine; Screening sensitive areas for vibration energy transmission on a shield machine soil bin partition plate according to the acquired cutter head vibration signals; Distributing vibration sensors on the screened sensitive areas based on the determined vibration sensor parameters to obtain an optimal observation array; Acquiring a vibration sensor signal of a shield tunneling process on the obtained optimal observation array, and extracting multidimensional signal characteristics related to the cutting state of the cutterhead based on the acquired vibration sensor signal; and obtaining the cutter wear state according to the extracted multidimensional signal characteristics and the cutter wear detection model, and finishing cutter wear detection based on shield tunneling vibration wave field analysis. As a further technical limitation, in the shield tunneling process, vibration sensor signals are ac