In shield tunneling, cohesive soil in the strata very easily forms stubborn mud cakes on the cutterhead and inside the soil chamber, causing excavation efficiency to plummet, worsening equipment wear, and even triggering the risk of shutdown. This pain point directly affects project progress and cost control.
Chemi Tech has gained deep insight into this need and developed a targeted shield tunneling sticky mud dispersant. Through its unique chemical action, the product effectively penetrates and breaks down the internal structure of the sticky mud, turning it from a hard caked mass into a loose, free-flowing state. This not only solves the problem of mud caking on the cutterhead, but also significantly improves the efficiency of excavated soil discharge.
Our solution is clear and specific: step one, based on the stratum soil properties and mud cake characteristics, carry out product selection and dosage analysis; step two, through the shield machine's injection system, precisely add the dispersant to the front of the cutterhead or key parts of the soil chamber; step three, act continuously during excavation to suppress the formation of new mud cakes in real time; step four, coordinate with process adjustments to achieve smooth operation of the excavated soil system.
In a municipal tunnel project, the construction team encountered severe mud caking while crossing a high-viscosity clay layer, and the average daily excavation distance dropped sharply. After applying Chemi Tech's dispersant, the mud cake softened and broke down noticeably within 24 hours, the cutterhead torque returned to normal, and the excavated soil discharged smoothly. Ultimately, the project's excavation efficiency in the critical section increased by about 40%, unplanned downtime caused by mud cleaning was avoided, and the overall schedule was safeguarded.
Chemi Tech is committed to providing practical support for shield tunneling with professional chemical technology. Choosing our dispersant means choosing smoother excavation, more controllable costs, and more reliable schedule assurance.