CCCC TUNNEL ENGINEERING COMPANY LIMITED: Beijing East Sixth Ring Road Project

Author:

Source:

Release time:

2025-11-28

The project traversed various strata, including silty clay, fine sand, highly weathered rock, and sandy gravel. A mobile underground mixing station solution was implemented for the shield construction.


An additional No. 6 platform was equipped with a two-component grouting mixing station (integrated storage, mixing, and pumping unit), significantly reducing the cost of grout transport vehicles.


Excavation diameter: 16.07 m 
Segment O.D.:15.4m
Total Length: 7.1 km
Production Capacity: 30 m³/h
Date: 2021