If stress concentration factor expression for rectangular drift opening is known, it can be of great help in the design and support of mine horizontal rectangular drift.
若能了解矩形巷道孔边的应力集中系数表达式，则对矿山水平矩形巷道的设计和支护都有很大的帮助。
The expression for calculating dynamic stress concentration factor is presented.
给出了动应力集中系数的计算表达式。
The expression for calculating dynamic stress concentration factor is presented.
给出了动应力集中系数的计算表达式。
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