It is necessary to research into the burst failure and rock burst tendency of combined sample which is made up of roof, coal and floor.

研究顶板-煤体-底板所构成的组合煤岩体试样变形破裂规律及冲击倾向性对于预测冲击矿压具有非常重要的实践意义。

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It is necessary to research into the burst failure and rock burst tendency of combined sample which is made up of roof, coal and floor.

研究顶板-煤体-底板所构成的组合煤岩体试样变形破裂规律及冲击倾向性对于预测冲击矿压具有非常重要的实践意义。

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