Rock block is heterogeneous and its acoustics property parameters have great dispersion.

岩块具有明显的非均质性，其声学特性参数离散性很大。

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After that, the weathering front spread gradually and the rock block is turned into a saprolite block.

随着时间加长，风化前锋逐渐扩展，岩石结构体最终转化为腐岩结构体。

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As shown by the experimental results, the scour of prototype was reappeared well by the use of increasing unit weight of the rock block.

试验结果表明，用加大岩块容重模拟基岩的方法，较好地复演了原体的冲刷过程。

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