Study of the Microstructure Characteristics of Three Different Fine-grained Tailings Sand Samples during Penetration.

The following conclusions can be drawn from Figure 12 : (1) With an increasing head pressure of the 30% fine-grained samples, the porosity of the samples in the same area shows an increasing trend from layer to layer.

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Through a comparative analysis, we have determined the following: (1) The total number of pores in the 30% fine-grained sample shows a decreasing trend during the seepage process.

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