Sticky Clay Challenges in Shield Tunneling? Chemi Tech's Professional Dispersant Provides Efficient Solution

In shield tunneling construction, cohesive soil formations readily form stubborn mud cakes on the cutterhead and within the muck chamber, leading to sudden drops in excavation efficiency, increased equipment wear, and even risks of machine stoppage. This pain point directly impacts project schedules and cost control.

Chemi Tech has deeply understood this need and developed a targeted dispersant for shield tunneling sticky clay. This product, through unique chemical action, effectively penetrates and disrupts the internal structure of the sticky clay, transforming it from a hard agglomeration into a loose, easily flowable state. This not only solves the cutterhead clogging issue but also significantly improves the efficiency of muck discharge.

Our solution is clear and straightforward: First, conduct product selection and dosage analysis based on the formation soil properties and mud cake characteristics. Second, accurately add the dispersant to key areas like the cutterhead front or muck chamber via the shield machine's injection system. Third, maintain continuous action during excavation to real-time inhibit new mud cake formation. Fourth, coordinate with process adjustments to ensure smooth operation of the muck handling system.

In a urban tunnel project, the contractor encountered severe clay agglomeration while traversing a high-viscosity clay layer, causing a substantial decrease in daily excavation advance. After applying Chemi Tech's dispersant, the mud cake noticeably softened and decomposed within 24 hours, cutterhead torque returned to normal, and muck discharge became smooth. Ultimately, excavation efficiency in the critical section increased by approximately 40%, and unplanned stoppages due to mud cleaning were avoided, safeguarding the overall project timeline.

Chemi Tech is committed to providing practical support for shield tunneling construction with professional chemical technology. Choosing our dispersant means choosing smoother excavation, more controllable costs, and more reliable schedule assurance.