Access Shaft #3, Sistema de Potabilización Area Norte
Project
Access Shaft #3, Sistema de Potabilización Area Norte When Access Shaft #3 experienced persistent soil and groundwater ingress during excavation, Keller was contracted to design, furnish and oversee…
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Sound Transit Light Rail - Northgate Link Extension
Project
Sound Transit Light Rail - Northgate Link Extension For this project, Keller designed a ground freezing system that was wholly installed within the tunnels – the first-of-its-kind application in…
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First Street Tunnel
Project
First Street Tunnel DC Water and Sewer Authority's $2.6 billion Clean Rivers Project aims to nearly eliminate combined sewer overflows to the Anacostia and Potomac Rivers and Rock Creek, also…
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Port Mann Water Main Supply Tunnel
Project
Port Mann Water Main Supply Tunnel Keller developed a liquid nitrogen ground freezing solution that allowed for safe access to inspect and repair the tunnel boring machine (TBM) cutter head that…
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Garden State Parkway Tunnel
Project
Garden State Parkway Tunnel Ground freezing was key to the successful of a TBM that had stalled beneath a critical highway. freeze pipe installation The project When loose subsurface conditions…
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Gibson County Coal Mine
Project
Gibson County Coal Mine Ground freezing is often specified for sinking production mine shafts through deep, water-bearing ground. The technique was first used at a US mine in 1888. freeze pipes The…
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New York City Water Tunnel No. 3
Project
New York City Water Tunnel No. 3 An extensive instrumentation and monitoring program was instrumental in early diagnosis of moving groundwater at two shafts. Timely implementation of grouting ensured…
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Combined Sewer Overflow Tunnel
Project
Combined Sewer Overflow Tunnel Moving groundwater and groundwater contamination can inhibit freeze closure. Keller overcame these challenges with accurate and early diagnosis of the condition and…
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Kansas Underground Salt Museum
Project
Kansas Underground Salt Museum The Hutchinson salt mine is an active salt mine in the United States with an underground museum open to the public. Ground freezing ensured dry and stable excavation of…
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