Struggling with TBM Slurry? Chemi Tech's Efficient Dispersant Offers Tailored Solutions

During TBM tunneling, untreated excavated soil often presents a series of challenging problems. Highly cohesive soil readily adheres and forms hard cakes on the cutterhead and within the excavation chamber, severely impeding rotation and accelerating equipment wear. Simultaneously, thick, viscous slurry leads to inefficient discharge through the screw conveyor, even causing blockages that force work stoppages for cleaning. This directly slows overall advance rates and increases unnecessary energy consumption and maintenance costs.

Addressing these prevalent construction pain points, Chemi Tech leverages deep materials application expertise to develop a range of high-performance soil dispersants for TBMs. The core of our solution lies in the precise chemical conditioning of the slurry system. The active components in our products rapidly penetrate the soil particles, disrupting their inherent adhesive structure and forming a stable dispersion layer on the particle surfaces. This significantly reduces the slurry's viscosity and yield stress, fundamentally improving its flowability.

Our professional service follows clear steps: First, our technical team conducts an on-site visit to collect representative soil samples for physio-chemical analysis. Second, based on the analysis results and specific geological conditions, we select or formulate the most suitable dispersant type. Next, we verify dosage and effectiveness in simulated laboratory conditions to ensure solution reliability. Finally, we provide detailed on-site dosing protocols and parameter guidance, followed by continuous performance monitoring and optimization.

In a city tunnel project in Eastern China, the contractor faced severe cutterhead cake formation and discharge port clogging while traversing a clay-rich stratum, causing daily advance rates to drop by over 40%. After implementing a customized dispersant solution from Chemi Tech, the crew injected the diluted agent into the excavation chamber as instructed. The slurry's viscosity decreased noticeably within a short period. Cutterhead torque fluctuation stabilized, cake formation was effectively suppressed, and muck discharge through the screw conveyor became continuous and smooth. The project successfully regained its planned advance speed and saved substantial costs associated with frequent equipment stoppages and cleanings.

Choosing Chemi Tech means selecting not just a product, but a professional support system dedicated to ensuring smooth and efficient TBM operations. We are committed to overcoming obstacles and creating greater value for your project through innovative chemical solutions.