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Study on Characteristics of Energy Storage and Acoustic Emission of Rock under Different Moisture Content

Author

Listed:
  • Chuanming Li

    (Key Laboratory of Safety and High-Efficiency Coal Mining, Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China
    School of Mining and Safety Engineering, Anhui University of Science and Technology, Huainan 232001, China)

  • Nan Liu

    (Key Laboratory of Safety and High-Efficiency Coal Mining, Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China
    School of Mining and Safety Engineering, Anhui University of Science and Technology, Huainan 232001, China)

  • Wanrong Liu

    (School of Architecture & Civil engineering, Liaocheng University, Liaocheng 252059, China)

  • Ruimin Feng

    (Department of Civil Engineering, University of Arkansas, Fayetteville, AR 72701, USA)

Abstract

In order to study the energy storage and sound emission characteristics of rocks under different water content, uniaxial compression test, cyclic loading, unloading test and sound emission test were carried out using RMT-150B rock mechanics test system and DS5 acoustic emission system. The results show that the total strain energy of saturated rock samples and the area of hysteresis loop are the largest in the same period number, which indicates that the presence of water can reduce the elastic limit of rock samples, making the rock very easy to deform and even damage. Acoustic emission tests show that the damage energy of water-bearing rocks is small. The higher the water content, the smaller the peak damage energy. The bending energy index W E T of the rock sample under saturated and natural state is smaller than that under dry state, which further indicates that the presence of water can reduce the elastic limit of the rock and soften it. The results can provide a basis for the prediction of underground engineering construction and rock failure instability.

Suggested Citation

  • Chuanming Li & Nan Liu & Wanrong Liu & Ruimin Feng, 2021. "Study on Characteristics of Energy Storage and Acoustic Emission of Rock under Different Moisture Content," Sustainability, MDPI, vol. 13(3), pages 1-15, January.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:3:p:1041-:d:483835
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    Cited by:

    1. Helin Fu & Jie Li & Guoliang Li & Dongping Li, 2022. "Hysteresis Behavior Modeling of Hard Rock Based on the Mechanism and Relevant Characteristics," Sustainability, MDPI, vol. 14(16), pages 1-18, August.

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