Flint Tunnel?A Project of Change and Challenge

by Roger B. Van Omen, Greenfield Construction Co, Livonia, MI, USA,



Document Type: Proceeding Paper

Part of: Tunneling Operations and Equipment

Abstract:

The talk will deal with construction of a 12' diameter (8. 5' finished) tunnel in the City of Flint, Michigan. This 5-mile long sewer tunnel was constructed through ground conditions varying from rock to running ground, free air to high air, low cover to high cover and, of course, varying conditions in between. It was constructed with two different types of tunnel boring machines, a Decker-Robbins arm excavator and a Lovat wheel excavator. The project also went through a protracted and expensive arbitration proceeding over changed conditions. The problems, the solutions and the lessons learned will all be discussed.

Subject Headings: Soil classification | Tunnels | Soil properties | Soft soils | Sewers | Excavation | Tunneling | Michigan | United States

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