Remediating uncontrolled water inflow into underground structures poses a significant challenge for engineers, civil/municipal infrastructure owners, and mine operators. Water intrusion can result in hazardous conditions, jeopardizing the safety of personnel within underground structures and also affecting the operational efficiency and life-span of equipment. Sovereign Hydroseal effectively addresses uncontrolled water intrusion by devising and implementing cutting-edge solutions to seal underground infrastructure. Sovereign’s state-of-the-art approach involves application of NOH2O®, a proprietary polymer-based emulsion (PBE) grout, using specially designed systems and techniques tailored to each situation.
Sovereign Hydroseal provides long-term waterproofing and water infiltration solutions for civil projects ranging from underground transportation structures, such as subway tunnels and stations, to dams, waste disposal sites and retaining walls. Projects have been focused in major cities where the Sovereign team of specialists are accustomed to working in congested...
Over 50 years ago, Sovereign invented NOH2O®, a patented grout application for the mining industry predominantly designed to address high pressure, high in-flow rate water ingress. Since then, Sovereign’s technology and services have been applied for water control in various subsurface mines and surface pits throughout the world – from...
Permeation grouting, also known as pressure grouting, fills cracks or voids in rock and pore space in granular soils with a flowable grout thereby forming a cohesive/cemented mass. To achieve the highest quality results, permeation grouting is performed by experienced personnel using safe, controlled, low-pressure injection techniques designed to consolidate...
Jet grouting is a trenchless ground improvement method that utilizes high velocity grout injection to stabilize soil conditions within a project site. Sovereign’s jet grouting technology improves in-situ soil with a stabilizing grout mix, delivered through high velocity jets, to create soil-cement columns. Using a small diameter rod (3’’), the...
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NYCT’s 34th Street -Hudson Yards Subway Station, which opened to the public in September 2015, was plagued by water infiltration very shortly after its opening. The water leaks impacted the operation of escalators, created slippery walking surfaces and damaged architectural finishes. In 2016, Sovereign was tasked to design a solution involving application of NOH2O^® to mitigate impacts to the station’s operation and the unsightly conditions.
The South Ferry Terminal Complex was severely damaged by Superstorm Sandy in 2012. As a result of the Station being entirely submerged in saltwater, the entire Station underwent a total makeover. Prior to this event, Station enhancements had been completed in 2009. However, water infiltration remained a problem. In 2015, Sovereign was tasked to design a solution utilizing NOH2O^® to mitigate water infiltration and ensure a dry Station.
Sovereign performed grouting of the Synclinorium Primary Ventilation Shaft at Kitwe, Zambia. This shaft was designed and constructed with the ventilation fans installed at the surface. There was water ingress into the shaft at various horizons in the upper 120m from surface, and the total inflow was originally estimated to be in the volume of 5000 liters per hour. The water entering the shaft had a very corrosive effect on the fan steelwork, and therefore was detrimental to the performance and the projected life span of the fans.