It has important theory meaning of this research to analyze the mechanism of sliding instability, study the relation of "support -rock" and establish dynamic roof structure theory.
本文的所得结论对分析浅埋煤层的强烈滑落失稳机理、进一步研究采场“支架—围岩”关系、建立浅埋煤层动态顶板结构理论具有重要的理论意义。
The design and test of bolting and rope support under composite roof are introduced, its technical theory and practical application are also expounded.
介绍在复合顶板下，锚杆和锚索支护的设计和试验，并阐明了该技术的机理以及实践中的具体应用。
The design and test of bolting and rope support under composite roof are introduced, its technical theory and practical application are also expounded.
介绍在复合顶板下，锚杆和锚索支护的设计和试验，并阐明了该技术的机理以及实践中的具体应用。
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