Fracture Process and Instability Precursor Determination of Freeze-thaw Red Sandstone Based on Acoustic Emission Monitoring

• Autorzy: Yun Mengchen , Ren Jianxi , Zhang Liang , Chen Xu

Identyfikatory

DOI

10.17531/ein/191193

• Języki publikacji: EN

Abstrakty

EN

Research on the damage and fracture mechanism of freeze-thaw (F-T) rocks under loading is a key scientific endeavor derived from numerous safety concerns in cold region rock mass engineering. This study analyzed the relationship between the entire triaxial compression process of the red sandstone and acoustic emission parameters. Based on the nonlinear growth characteristics of cumulative event counts of acoustic emission, a predictive method was proposed for determining the crack initiation strength, damage strength, and failure strength of F-T sandstone. The results demonstrated that this method exhibited good consistency with the crack volume strain approach and accurately and conveniently predicted sample failure strength. The fitted curve of the equation closely aligned with experimental data. These findings offer insights into the classification of damage and fracture mechanisms in F-T sandstone and provide valuable groundwork for research on rock failure prediction and forecasting methods employing acoustic emission monitoring.

Słowa kluczowe

EN

freeze-thaw sandstone; triaxial compression; rupture process; acoustic emission parameter; precursor information

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2024
• Tom: Vol. 26, no. 4
• Strony: art. no. 191193
• Opis fizyczny: Bibliogr. 25 poz., fot., rys., tab., wykr.

Twórcy

autor

Yun Mengchen

• School of Architecture and Civil Engineering, Xi’an University of Science and technology, China

• https://orcid.org/0000-0003-0600-0258

autor

Ren Jianxi

• School of Architecture and Civil Engineering, Xi’an University of Science and technology, China

• https://orcid.org/0000-0001-8494-7442

autor

Zhang Liang

• School of Architecture and Civil Engineering, Xi’an University of Science and technology, China

• https://orcid.org/0000-0003-0228-7159

autor

Chen Xu

• School of Civil Engineering, Southwest Jiaotong University, China

• https://orcid.org/0000-0001-5924-0373

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