Sample size and span size diagram.

<div><p>To investigate the permeability enhancement effect of microorganisms (Methanogens) on anthracite and their impact on coal strength, static fracture tests were conducted on semi-circular SCB specimens with prefabricated cracks of varying angles after immersion in neutral and micro...

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Bibliographic Details
Main Author:	Wen Wang (6570) (author)
Other Authors:	Yuxiang Song (5181290) (author), Daping Xia (5730716) (author), Xiaowei Lu (2250892) (author), Songsong Guan (22574298) (author), Chuanjiu Zhang (22574301) (author), Yiwen Ju (3906127) (author)
Published:	2025
Subjects:	Biophysics Physiology Biotechnology Ecology Infectious Diseases Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified test results show permeability enhancement effect loading direction diminished circular scb specimens static fracture tests resist crack propagation promoting tensile failure different slit angles different solution environments prefabricated crack tip div >< p fracture toughness decreased different fracture angles fracture process zone prefabricated angle cracks prefabricated cracks fracture toughness varying angles different stages different solutions solution environment loading process composite specimens fracture process shear failure failure process strain field significant differences evolution characteristics displacement field deformation characteristics coal sample 2d techniques
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Sample size and span size diagram.

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