Damage study of fiber-doped superfine tailings cemented backfill based on acoustic emission cumulative ringing count

Lai, Yanming; Zhao, Kang; Yan, Yajing; Yang, Jian; Wu, Jun; Ao, Wenqiang; Guo, Lei

doi:10.1007/s10853-022-07280-y

Cited by 9 publications

(3 citation statements)

References 29 publications

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“…Under uniaxial compression of the various doped fiber-filled bodies, the cumulative acoustic emission energy values were derived as a function of time by fitting the test data to an S-function with the time variable (see Figure 7). According to Figure 7, the specimens doped with various fiber-filled bodies emit sound with a cumulative energy and time that follow the Boltzmann functional relationship [33,34]:…”

Section: Damage Model Construction Of the Filling Body Based On The A...mentioning

confidence: 99%

“…where M is the cumulative energy of the AE; A1, A2 are the minimum and maximum values of the cumulative AE energy, respectively; and the B, C values can be fitted from the test data. According to Figure 7, the specimens doped with various fiber-filled bodies emit sound with a cumulative energy and time that follow the Boltzmann functional relationship [33,34]:…”

Section: Damage Model Construction Of the Filling Body Based On The A...mentioning

confidence: 99%

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Acoustic Emission-Based Modeling of Fiber Tailings Cementation and Filling Body Dynamics and Damage Ontology

Zhang,

Song,

et al. 2023

Minerals

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Optimizing the mechanical characteristics of cemented tailings backfill (CTB) and quickly identifying its damage state under external loading, this study compares and prepares CTB specimens without fiber, doped with polypropylene fiber (PF), doped with glass fiber (BL), and doped with polypropylene and glass blended fiber (PB). Uniaxial compression and acoustic emission (AE) monitoring experiments are also conducted. Based on the cumulative energy of AE, the damage ontology model of CTB was developed. As shown by the study’s findings, adding various fibers can greatly enhance the filler body’s uniaxial compressive strength (UCS). BL has the greatest effect, followed by PB, while PFs have the least effect. Furthermore, the fibers primarily prevent the growth of crack extension by extending or breaking themselves, The results of the tests on acoustic emission revealed that the fiberless filler’s signals were more active prior to the peak point and less intense in the later stages of the damage, whereas the fiber-doped filler’s signals began to increase following the peak point and remained high. Thus, the damage model curves of various fiber-filled bodies are constructed based on the cumulative energy of acoustic emission, and the experimental data verification shows that the two have good consistency, suggesting that the established theoretical model can serve as a basis of reference for assessing the filled bodies’ damage state.

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Section: Damage Model Construction Of the Filling Body Based On The A...mentioning

confidence: 99%

Section: Damage Model Construction Of the Filling Body Based On The A...mentioning

confidence: 99%

Acoustic Emission-Based Modeling of Fiber Tailings Cementation and Filling Body Dynamics and Damage Ontology

Zhang,

Song,

et al. 2023

Minerals

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show abstract

“…The Boltzmann function can express the relationship between the measured cumulative ringing count and time [ 56 , 57 ], that is:

…”

Section: Establishment Of Damage Constitutive Model Of the Aspmmentioning

confidence: 99%

The Experimental Investigation on Mechanics and Damage Characteristics of the Aeolian Sand Paste-like Backfill Materials Based on Acoustic Emission

Shao

Tian

et al. 2022

Materials

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With the wide application of the filling mining method, it is necessary to consider the influence of rock activity on the filling body, reflected in the laboratory, that is, the influence of loading rate. Therefore, to explore the response characteristics of loading rate on the mechanical and damage characteristics of aeolian sand paste filling body, DNS100 electronic universal testing machine and DS5-16B acoustic emission (AE) monitoring system were used to monitor the stress–strain changes and AE characteristic parameters changes of aeolian sand paste filling body during uniaxial compression, and the theoretical model of filling sample damage considering loading rate was established based on AE parameters. The experimental results show that: (1) With the increase in loading rate, the uniaxial compressive strength and elastic modulus of aeolian sand paste-like materials (ASPM) specimens are significantly improved. ASPM specimens have ductile failure characteristics, and the failure mode is unidirectional shear failure → tensile failure → bidirectional shear failure. (2) When the loading rate is low, the AE event points of ASPM specimens are more dispersed, and the large energy points are less. At high loading rates, the AE large energy events are more concentrated in the upper part, and the lower part is more distributed. (3) The proportion of the initial active stage is negatively correlated with the loading rate, and the proportion of the active stage is positively correlated with the loading rate. The total number of AE cumulative ringing decreases with the increase in loading rate. (4) Taking time as an intermediate variable, the coupling relationship between ASPM strain considering loading rate and the AE cumulative ringing count is constructed, and the damage and stress coupling model of ASPM specimen considering loading rate is further deduced. Comparing the theoretical model with the experimental results shows that the model can effectively reflect the damage evolution process of ASPM specimens during loading, especially at high loading rates. The research results have significant reference value for subsequent strength design of filling material, selection of laboratory loading rate and quality monitoring, and early warning of filling body in goaf.

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Mesoscopic damage evolution and acoustic emission characteristics of cemented paste backfill under different loading rates

Hao

Song²,

Huang³

et al. 2022

Environ Sci Pollut Res

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Damage study of fiber-doped superfine tailings cemented backfill based on acoustic emission cumulative ringing count

Cited by 9 publications

References 29 publications

Acoustic Emission-Based Modeling of Fiber Tailings Cementation and Filling Body Dynamics and Damage Ontology

Acoustic Emission-Based Modeling of Fiber Tailings Cementation and Filling Body Dynamics and Damage Ontology

The Experimental Investigation on Mechanics and Damage Characteristics of the Aeolian Sand Paste-like Backfill Materials Based on Acoustic Emission

Mesoscopic damage evolution and acoustic emission characteristics of cemented paste backfill under different loading rates

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