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Advances in Civil Engineering
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2021
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Article
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Fig 4
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Research Article
Roof Control Technology of Mining Roadway under the Influence of Advanced Supporting Pressure
Figure 4
Plastic zone distribution of the surrounding rock. (a) Option 1. (b) Option 2. (c) Option 3. (d) Option 4.
(a)
(b)
(c)
(d)