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Advances in Civil Engineering
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Advances in Civil Engineering
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2019
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Article
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Tab 2
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Research Article
Research on the Deformation Characteristics and Support Technology of a Bottom Gas Extraction Roadway under Repeated Interference
Table 2
Borehole images.
Surrounding rock image
Hole depth (m)
Surrounding rock zone
0∼0.6
Crushing zone
0.6∼2
Fracture zone
2∼3
Stability zone