The increase in mining height makes the weighting of immediate roof become more violently, which requires that the support strength should increase accordingly.
由于采高加大使基本顶来压更加强烈，支架的支护强度更要加大。
The increase in mining height makes the weighting of immediate roof become more violently, which requires that the support strength should increase accordingly.
由于采高加大使基本顶来压更加强烈，支架的支护强度更要加大。
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