By analyzing the rock stress state around the elliptic borehole, the stability conditions are established for different types of formation.

进而通过对椭圆形井眼周围岩石应力分布的分析，对不同岩性的地层确定了不同的井眼稳定性条件。

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The effect of stress-releasing hole and water injection to the face on rock stress state around gateway driving face has been studied in this paper.

本文研究了卸载孔及向掌子面注水对煤巷掘进头岩石应力状态的影响。

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Based on the monitoring for expressway tunnel construction and finite element analysis, the paper analyzed the country rock stress state in the process of tunnel construction.

通过高速公路隧道施工监测及有限元数值分析方法，分析隧道施工过程中围岩应力变化情况。

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