岩体的震动或爆炸荷载导致了瞬时荷载的产生，而由此产生的应力状态将是动态的或准静态的。

Rock vibration or explosion load lead to the instantaneous load, under these circumstances, stress is at dynamic or quasi-static.

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研究表明，荷载瞬时作用后，地基中有明显的有效应力变化，这是地基产生初始沉降的原因。

From the analysis, it is found that the changing of the effective stress in the ground results in the immediate settlement.

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另外，应力与瞬时应变线性拟合结果表明，瞬时轴向应变与轴向荷载近似成比例增长。

In addition, results of the linear regression for stress and instantaneous strain show that the instantaneous axial strain and axial load approximated to grow proportionally.

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