key stratum 关键层 ; 标准层
roof key stratum 顶板关键层
main key stratum 主关键层
key stratum team 关键层组探讨
primary key stratum 覆岩主关键层
judging key stratum 关键层判别
combined key stratum 组合关键层
key stratum pressure 主关键层来压
Through to acoustic emission technology understanding, in the light of the mining engineering key stratum theory, applies it in overhead mining.
通过对声发射技术的理解，结合采矿工程中关键层理论，将其应用到蹬空开采中。
According to the model, applying the cusp catastrophic theory the mechanics mechanism of water inrush is analyzed from key stratum of floor.
根据这一模型，应用尖点突变原理分析了承压水底板关键层失稳突水的力学机制。
Theoretical analysis, simulation experiment and engineering exploration are adopted to study the impact of the location of primary key stratum on the evolution range of water flowing fracture.
采用理论分析、模拟实验和工程探测等方法，就覆岩主关键层位置对导水裂隙带高度的影响进行深入研究。
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