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This is a Experimental Study study.

October 16, 2025BuildingsOpen Access

Mud Spurt Distance and Filter Cake Hydraulic Conductivity of Slurry Shield

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Exploration of filter cake properties and mud spurt dynamics in slurry shield tunneling, indicating improved tunneling stability.

CMC-Na is identified as the most effective additive for improving slurry properties.
A comprehensive database was created for 15 slurry compositions to predict filter cake hydraulic conductivity.
The study reveals that the dynamic filter cake achieves about two-thirds of its maximum thickness for stability control.
A new mud spurt model predicts slurry behavior without needing complex tests, enhancing tunneling safety.

Yin et al. (2025) studied this question.

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