Ultrasonic characteristics and equivalent crack width of coal and rock bodies around boreholes during progressive failure

• Xiang Ji,

  Roles Data curation, Writing – original draft, Writing – review & editing

  Affiliations College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, China, Key Laboratory of Western Mine Exploitation and Hazard Prevention of the Ministry of Education, Xi’an, China

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• Tianjun Zhang ,

  Roles Funding acquisition, Supervision

  * E-mail: tianjun_zhang@xust.edu.cn

  Affiliations College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, China, Key Laboratory of Western Mine Exploitation and Hazard Prevention of the Ministry of Education, Xi’an, China

  https://orcid.org/0000-0001-6137-2340

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• Lei Zhang,

  Roles Funding acquisition, Software

  Affiliations Key Laboratory of Western Mine Exploitation and Hazard Prevention of the Ministry of Education, Xi’an, China, College of Energy, Xi’an University of Science and Technology, Xi’an, China

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• Wen Yang,

  Roles Formal analysis

  Affiliation College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, China

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• Hang Zhang

  Roles Data curation

  Affiliation College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, China

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