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| 霍普金森效应当人射压力波遇到自由面时，一部分或全部反射为方向完全相反的拉伸应力波。如果反射拉应力和人射压应力叠加之后所合成的拉应力超过岩石的极限抗拉强度时,自由面附近的岩石即被拉断成小块，或片落，或形成片漏斗。这种现象称为霍普金森效应 | |||
| 霍普金森效应 | |||
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