Hydraulic Barrier Walls

DeWind One-Pass Trenching provides a cutting-edge solution for mixed-in-place hydraulic barrier walls, also known as slurry walls, cutoff walls, or barrier walls. DeWind’s advanced technology was designed for precision and efficiency. We ensure the creation of completely homogenized walls from top to bottom and beginning to end – offering unmatched reliability and performance.

What DeWind Offers

DeWind specializes in constructing hydraulic barrier walls by mixing soil-bentonite (SB), soil-cement-bentonite (SCB), or any other powdered reagent directly in place. These walls are ideal for high-stake applications such as dam and levee repairs, seepage control, and environmental containment. Our trenching equipment is capable of reaching depths of up to 150 feet and widths ranging from 12 inches to 72 inches, with custom sizes available to suit project needs.

How DeWind Does It

DeWind’s innovative approach combines superior engineering and advanced trenching technology to deliver fast, precise, and effective installations:

1. Precision In-Situ Mixing
   Using continuous vertical and horizontal mixing, DeWind ensures that the wall is fully homogenized with no voids or inconsistencies. This process creates a seamless barrier, regardless of soil type or condition. Our trenchers also blend low-slump mixtures directly in place, ensuring structural integrity in demanding situations – such as dam and levee repairs.
2. Powerful Trenching Equipment
   DeWind One-Pass Trenchers can cut through dense soil profiles and sedimentary rock using carbide cutting bits and secure a reliable key into most confining layers. These machines deliver consistent results at speeds of 200–500 linear feet per day, or 5–6 inches per minute, depending on confining layers, soil conditions and trench depth.
3. Technologically Advanced Features
   DeWind’s trenchers are equipped with state-of-the-art quality control systems, including delivery systems that are metered for precise additive control, underground water and slurry injection nozzles for consistent mixing, and speed controls for both mixing chain and track movement. Laser and GPS guidance systems ensure precise depth control and accurate trench alignment – which can be mapped for future reference.
4. Adaptable and Efficient Operation
   The equipment can handle a variety of soil conditions and accommodates different types of mixtures, including high-slump and low-slump configurations. This versatility allows for trench widths and depths tailored to specific project requirements, ensuring a perfect fit for every job.

Why DeWind Excels

DeWind’s One-Pass Trenching Technology sets a new standard in hydraulic barrier wall construction by combining speed, safety, and quality:

• Unmatched Quality: The in-situ mixing process eliminates the risk of voids or gaps, resulting in a seamless and durable barrier wall.
• Safety and Speed: With minimal equipment movement and fewer personnel required on-site, DeWind’s method enhances safety while achieving installation rates of up to 500 linear feet per day in optimal conditions. 
• Versatility and Precision: The system accommodates custom trench dimensions and leverages laser-guided precision for optimal alignment.
• Reduced Quality Control Burden: Since DeWind doesn’t rely on slurry to hold the trench walls open, nearly all traditional slurry trenching QC requirements are not applicable to a one-pass barrier wall.

This method also avoids the need for open trench excavations, messy mixing ponds, or extensive on-site equipment, making it ideal for projects with tight spaces or sensitive environmental considerations.

Whether you’re tackling dam repairs, seepage control, or environmental containment, DeWind One Pass Trenching has proven expertise which offers an efficient, cost-effective, and reliable approach – custom tailored to some of the most demanding project requirements.