SOIL STABILIZATION/GROUND IMPROVEMENT

In Situ soil mixing utilizes hollow stem augers mounted on cranes or hydraulic excavators to mix dry or slurried reagents with soft subgrade soils for ground improvement to support foundations or other structures. The single auger soil mixing technique is capable of mixing 3 to 12 foot columns of material and is most often utilized for large area ground stabilization. Other applications, typically utilizing multiple auger systems, include deep cutoff walls and excavation shoring or diaphragm walls. As the augers rotate and advance into the soil, reagents are injected through the hollow drill shaft and mixed thoroughly with the soil to produce structurally improved or stabilized material. Great Lakes E&I can assist clients with the development of specific column mixing patterns and grout mix designs (utilizing a variety of additives such as cement, CKD, fly ash, bentonite, hydrated lime, etc.) to achieve strength and other design parameters required for any given project.

PROJECT HIGHLIGHT

SANTA ANA RIVER LEVEE IMPROVEMENT
​SANTA ANA, CALIFORNIA

Santa Ana, CA

  • 650 lf of Sheet Pile Coffer Dam in Santa Ana River
  • Work at active plant amidst overhead and underground utilities
  • 9,000 cy of In Situ Stabilization (ISS) in rocky subgrade conditions
  • 700 ISS columns at 13 cy each
  • 5,000 cy of Jet Grouting
  • 699 Compaction Grout at 21 ft bgs
  • Installation of a 1,200 gpm de-watering system 
  • 5,000 cy of spoils disposal
  • 5,000 cy of imported fill

​The Orange County Sanitation District is the fifth largest wastewater management agency in the country. Recent upgrades and improvements allow it to treat to secondary treatment standards. More than one-third of the secondary treated water is recycled by Orange County Water District, with the remainder discharged through the Pacific Ocean outfall.

PROJECT HIGHLIGHT

SANTA ANA RIVER LEVEE IMPROVEMENT
​SANTA ANA, CALIFORNIA

Interceptor Sacramento CA

In 2010, Sacramento Regional County Sanitation District (SRCSD) completed the installation of 12 foot diameter sewer lines that would improve the sewer system in the Natomas area of Northern Sacramento County. The construction method used to install this sewer line was by micro-tunneling, also known as horizontal drilling. In locations where manholes were installed, the horizontal drill remained idle, loosening the surrounding soils due to vibration.

INFRASTRUCTURE TECHNOLOGIES PROJECTS

ENVIRONMENTAL REMEDIATION PROJECTS