高应力下土与结构接触面抗剪强度研究是当前井壁破裂理论研究的关键之一。

The shear strength between soil and structure interfaces in high stress is one of key research in shaft lining fracture theory.

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气体压力分布影响裂缝尖端应力强度，因而不能用传统的破裂压力来判断裂缝起裂扩展。

Since the pressure gradient affects stress strength of crack top, it is unsuitable to judge crack initiation by the traditional breakdown pressure.

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给出了灰砂岩、石灰岩两种岩石动态的破裂强度与应力应变关系。

The dynamic strength and dynamic stress-strain curves for sandstone and limestone are given.

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