Elasto-plastic solution for undrained cylindrical cavity expansion in refuse soil.

For refuse soil with OCR = 3 and OCR = 10, in the area near the cavity wall, as the fiber content increases from 0 to 30%, the stress state in all directions shows an increasing trend, and in the plastic and elastic zones, the stress state shows a decreasing trend.

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With the OCR increasing from 1.2 to 10, the excess pore pressure shows a decreasing trend, and the limit pore pressure decreases from 1.65 for OCR = 1.2 to 0.56 for OCR = 10.

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