Weiwei Ye’s research while affiliated with University of Science and Technology Beijing and other places


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Publications (6)


Figure 1 Schematic illustration of determining threshold using cluster analysis (a: A series of discrete points
Figure 2 Rock standard specimens prepared for the experiment 240 The rock mechanics testing system in this study utilized a WAW-300 computer-controlled servo 241
Denoising of Acoustic Emission Signals from Rock Failure Processes through ICEEMDAN Combined with Multiple Criteria and Wavelet Transform
  • Preprint
  • File available

June 2024

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21 Reads

Tao Wang

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Weiwei Ye

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Liyuan Liu

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Wei Huang

To improve the accuracy of rock failure monitoring, this article addresses the optimization problem of denoising acoustic emission (AE) signals. Combining laboratory experiments on rock AE and theoretical research on signal denoising, a denoising method based on improved complete ensemble empirical mode decomposition with adaptive noise (ICEEMDAN) is proposed for rock fracture AE signals. The method utilizes the ICEEMDAN algorithm to decompose the original noisy signal into multiple intrinsic mode functions (IMFs) and employs cluster analysis to determine data thresholds based on their characteristics. Subsequently, using multiple criteria such as permutation entropy, correlation coefficient, and variance contribution rate, the IMFs are categorized into two groups. The low-correlation portion is partially removed based on the combination of indicators, while the high-correlation portion is denoised using wavelet thresholding (WT). Finally, a wavelet analysis is performed to reconstruct the signal, effectively achieving an optimized denoising of the original signal. Quantitative analysis of denoising effects on typical rock uniaxial compression fracture AE signals reveals that the optimized method has a positive impact on high-frequency noise reduction. The peak frequency range is unaffected before and after optimization, while the main amplitude reduction is concentrated in the high-frequency range. Compared to traditional wavelet denoising methods, the proposed method exhibits higher signal-to-noise ratio (SNR) improvement, as well as varying degrees of reduction in mean squared error (MSE) and total harmonic distortion (THD). The research presented in this paper introduces a novel approach to optimizing the application of rock acoustic emission signals.

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Disturbance failure mechanism of highly stressed rock in deep excavation: Current status and prospects

March 2024

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54 Reads

International Journal of Minerals Metallurgy and Materials

Tao Wang

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Weiwei Ye

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Liyuan Liu

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[...]

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Xianhui Feng

This article reviews the current status on the dynamic behavior of highly stressed rocks under disturbances. Firstly, the experimental apparatus, methods, and theories related to the disturbance dynamics of deep, high-stress rock are reviewed, followed by the introduction of scholars’ research on deep rock deformation and failure from an energy perspective. Subsequently, with a backdrop of high-stress phenomena in deep hard rock, such as rock bursts and core disking, we delve into the current state of research on rock microstructure analysis and residual stresses from the perspective of studying the energy storage mechanisms in rocks. Thereafter, the current state of research on the mechanical response and the energy dissipation of highly stressed rock formations is briefly retrospected. Finally, the insufficient aspects in the current research on the disturbance and failure mechanisms in deep, highly stressed rock formations are summarized, and prospects for future research are provided. This work provides new avenues for the research on the mechanical response and damage-fracture mechanisms of rocks under high-stress conditions.


Principle and practice of hydraulic softening top-cutting and pressure relief technology in weakly cemented strata

February 2024

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13 Reads

Frontiers in Earth Science

Extremely thick and hard roofs are difficult to break in the mining of a working face, and the large area of the suspended roof easily induces a strong ground pressure or dynamic impact disasters. The roof control of a coal mining face in a mine in western China was taken as a case study. The mineral composition, microstructure, and hydrophysical properties of the hard roof overlying the coal seam were analyzed. The characteristics of the weak-cementation strata that are prone to mud and collapse when encountering water were targeted to investigate the hydraulic softening roof-cutting and pressure relief technology. It was found that the clay mineral composition in the roof plate accounts for 60.6%. After 24 h of natural immersion, the rock strength decreased by approximately 10.3%–49%, and further immersion caused disintegration. By arranging high and low double-row water injection softening drilling holes in the cutting hole and roadway of the working face, the strength of roof rock strata in the target area was reduced, and the initial weighting step distance and weighting strength of the working face were reduced. The hydraulic softening roof-cutting pressure relief technology effectively regulated the weighting step distance of the hard roof and the peak weighting of the working face.


Residual stress measurement and analysis of siliceous slate-containing quartz veins

January 2024

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10 Reads

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6 Citations

International Journal of Minerals Metallurgy and Materials

Engineering geological disasters such as rockburst have always been a critical factor affecting the safety of coal mine production. Thus, residual stress is considered a feasible method to explain these geomechanical phenomena. In this study, electron backscatter diffraction (EBSD) and optical microscopy were used to characterize the rock microcosm. A measuring area that met the requirements of X-ray diffraction (XRD) residual stress measurement was determined to account for the mechanism of rock residual stress. Then, the residual stress of a siliceous slate-containing quartz vein was measured and calculated using the sin2ϕ method equipped with an X-ray diffractometer. Analysis of microscopic test results showed homogeneous areas with small particles within the millimeter range, meeting the requirements of XRD stress measurement statistics. Quartz was determined as the calibration mineral for slate samples containing quartz veins. The diffraction patterns of the (324) crystal plane were obtained under different ϕ and φ. The deviation direction of the diffraction peaks was consistent, indicating that the sample tested had residual stress. In addition, the principal residual stress within the quartz vein measured by XRD was compressive, ranging from 10 to 33 MPa. The maximum principal stress was parallel to the vein trend, whereas the minimum principal stress was perpendicular to the vein trend. Furthermore, the content of the low-angle boundary and twin boundary in the quartz veins was relatively high, which enhances the resistance of the rock mass to deformation and promotes the easy formation of strain concentrations, thereby resulting in residual stress. The proposed method for measuring residual stress can serve as a reference for subsequent observation and related research on residual stress in different types of rocks.


Study on the mechanical properties and acoustic emission signal characteristics of freezing pipe

December 2023

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12 Reads

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1 Citation

The increase in freezing depth requires thicker, stronger, and colder freezing walls, and various complex factors in deep strata greatly increase the risk of freezing pipe fracture. To address the phenomenon of freezing pipe fracture, this paper designs freezing pipe and joint mechanical performance experiments based on acoustic emission (AE) technology, mainly testing the deformation of freezing steel pipes and composite joints at normal and low temperatures, changes in load bearing capacity, and corresponding AE characteristics of the process. Additionally, the associated AE characteristics throughout the process will be analyzed. The ultimate goal is to establish a discriminative pattern for identifying the critical fracture of freezing pipes based on the analysis of AE signal characteristics in conjunction with mechanical properties. The sensitivity of the AE system under low-temperature conditions and the reliability of the test were tested through pencil lead break experiments, and saltwater noise detection experiments were conducted to prevent noise interference from low-temperature saltwater flow and pipe wall friction in the identification of crucial signals for freezing pipe fracture. This study provides a basis for identifying the deformation mechanics and fracture warning of freezing pipes through dynamic analysis of AE monitoring information.


Impact of Crack Inclination Angle on the Splitting Failure and Energy Analysis of Fine-Grained Sandstone

July 2023

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57 Reads

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5 Citations

Applied Sciences

To investigate the impact of crack inclination angle on the tensile strength and characteristics of splitting failure in rock, split tests were conducted on fine-grained sandstone with pre-existing cracks under different crack inclination angle conditions. Acoustic emission and digital image techniques were continuously monitored during the tests. The evolution of absorbed energy during the loading and failure processes was calculated and discussed, aiming to elucidate the interconnections among the maximum absorbed energy, the pre-existing crack inclination angle, the tensile strength, and the acoustic emission energy of the rock, which can provide a reference for the design and construction of tunnels or mines in rock formations with pre-existing cracks. The experimental findings indicate the following: (1) The tensile strength and failure displacement decrease first and then increase with the increase in the pre-existing crack inclination angle, demonstrating an approximate “V”-shaped alteration. (2) The failure modes of specimens with pre-existing cracks can be classified into three types: tensile failure along the center of the disk, tensile failure along the tip of the pre-existing crack, and tensile–shear composite failure along the tip of the pre-existing crack. (3) The crack inclination angle exerts a substantial influence on the evolution curve of energy absorption. The maximum energy absorption of the specimens first increases and then decreases with the increase in the crack inclination angle. Moreover, a corresponding nonlinear relationship is observed between the maximum energy absorption and the tensile strength, as well as the AE energy.

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Citations (3)


... There are many types of construction waste, such as concrete blocks, bricks, and gravel blocks in the foundation of new road sections. Additionally, the lower layer of construction waste is an argillaceous siltstone layer, and the stratum has the characteristics of considerable thickness, a complex structure, and inconsistent compaction; therefore, it cannot be directly used as the bearing layer of a road foundation [24][25][26]. Through this research on foundation reinforcement for construction waste heaps, we hope to provide a reference for the design and construction of high-pressure jet-grouting pile technology to strengthen the foundations of miscellaneous construction waste fill. ...

Reference:

Research on the Reinforcement Effect and Bearing Characteristics of High-Pressure Jet-Grouting Piles on Covered Road Composite Ground in Landfill Sites
Study on the mechanical properties and acoustic emission signal characteristics of freezing pipe

... Consequently, mining operations in these formations face significant challenges (Liu et al., 2020;Liu et al., 2021;Liu et al., 2022;Asif et al., 2022;Liu et al., 2022;Li et al., 2022;Liu et al., 2023). This difficulty necessitates indepth research on utilizing the geological characteristics of western China to implement targeted measures for preserving the weakroof rock layer and regulating the working face weighting (Xu et al., 2018;Wang et al., 2023a;Wang et al., 2023b;Wang et al., 2023c). This study investigated the physical, mechanical, and hydrophysical properties of weakly cemented strata, using a coal mining face in a mine located in western China as a case study. ...

Residual stress measurement and analysis of siliceous slate-containing quartz veins
  • Citing Article
  • January 2024

International Journal of Minerals Metallurgy and Materials

... This statement clearly is supported by the numerous research projects that are still being conducted that focus on the basic type of loading applied in laboratory experiments. These projects often focus on a specific aspect, for example, the impact of heterogeneities (e.g., [10,27,28]), the orientations of flaws or weak planes (e.g., [21,[29][30][31]), and the characterisation of the (micro-)fracturing process by the analysis of acoustic emission signals (e.g., [15][16][17]32,33]). These are only a few of the many examples that use classic testing procedures. ...

Impact of Crack Inclination Angle on the Splitting Failure and Energy Analysis of Fine-Grained Sandstone

Applied Sciences