Methods

01

JSG - Jumbo-jet Special Grout

JSG (Jumbo-jet Special Grout) is a common ground improvement method. High-pressure slurry and air are injected through drilling rods to a set depth, replacing soil and forming cement columns.

This method improves soil strength, stability, and water sealing. It is widely used in MRT, underground, deep excavation, and foundation reinforcement works.

02

Low-pressure grouting injects cement or chemical materials into soil voids to solidify and improve ground conditions.

Using pressure below 30 kgf/cm², materials are injected by permeation or fracture methods to fill voids, block water flow, and enhance bearing capacity.

It is used for ground reinforcement, waterproofing, and shield tunneling works.

03

Applied to sandy-water strata and secondary grouting needs. Using specialized materials that gel rapidly, it effectively stops water inrush and stabilizes ground conditions. The gel-like properties prevent hardening on shield machine cutterheads, reducing blockage risks and ensuring construction safety.

04

This method addresses specialized geological conditions, fractures, water leakage, and localized weak zones. By utilizing highly reactive resin materials, it achieves rapid water shut-off, seals seepage paths, improves localized stability, and enhances overall construction conditions.

05

Foundation reinforcement strengthens ground and structural stability, improving bearing capacity and ensuring safety.