Jingze Xu

Title: Jingze Xu and Double-Liquid Grouting for Underwater Shield Engineering.

Introduction

Jingze Xu is an inventor associated with Shandong, China. His work includes a patented grouting technology designed for super-large-diameter underwater shield engineering under high water pressure. Xu is associated with Ocean University of China and China Railway 14th Bureau Group Corporation Limited.

Latest Patents

Xu is credited with 1 patent: “Double-Liquid Grouting Slurry, Its Technology and Application for Super Large Diameter Underwater Shield Engineering Under High Water Pressure Condition.”

The invention describes two slurry components. Slurry I combines cement clinker, slag, fly ash, steel slag, bentonite, limestone tailings, a water-reducing agent, and cellulose. Slurry II contains short-cut fibers, sodium silicate solution, and viscous polymers. The disclosed preparation process includes crushing, screening, milling, and group mixing at different speeds.

During grouting, the patent specifies a slurry I-to-slurry II volume ratio ranging from 1:1 to 10:1. It also describes injecting the mixture into the shield void using six-point grouting at the shield tail and synchronous grouting with a 3+2+1 segment-splicing arrangement.

Career Highlights

Xu’s patent addresses the technical demands of filling shield voids in underwater tunneling projects exposed to high water pressure. The formulation and application methods are intended to support grouting operations for super-large-diameter shield engineering.

Collaborations

Xu is associated with Ocean University of China and China Railway 14th Bureau Group Corporation Limited. His listed coworkers include Fei Sha and Jian Chen.

Conclusion

Jingze Xu’s patented double-liquid grouting approach combines a specified slurry formulation with preparation and injection methods for underwater shield engineering under high water pressure.