The Background

Soil Types: Backfill soil

The coke oven gas cabinet is the most crucial production facility within the plant area, with its foundation comprising ring beams and pile foundations.

Maximum Storage Capacity Of The Coke Oven Gas Cabinet: 120,000 m³

Total Weight When Fully Loaded: 5,000 tons

The Problem

The main reason for the deformation of the project foundation was improper handling of the foundation soil. The backfill was not compacted in layers, and there were no drainage measures. The rise in groundwater levels during the rainy season or continuous rainfall caused groundwater to erode and soften the foundation.

The Solution

Professional facilities were used to fill and compact the soil with new materials. After the material consolidated with the soil, it formed a new slurry-soil composite. Once set and hardened, the entire soil body had high bearing capacity, strength, and stability. Such a soil body was no longer a soft soil layer and also reduced the erosion effect of groundwater on the foundation.

The Result

The bearing capacity of the foundation beneath the nearly 5,000-ton coke oven gas holder met usage requirements. The actual elevation differed from the design elevation by only 1mm. The verticality of the holder met national standards and achieved the acceptance criteria.

Construction Period: 25 days

Total Lift Amount: 112mm