A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Perceived Risk Versus Cost in Karst Remediation: A Case History
This case history discusses issues associated with a section of Norfolk Southern Corporation (NSC) track located about 30 miles northeast of Knoxville, Tennessee. At this location, the alignment includes a fill embankment that supports a single, curved track crossing the low point of a broad topographic depression. The local geology includes bedrock of the Knox Limestone Formation that is highly susceptible to solution weathering and the development of karst landforms. Beginning in the mid-to-late 1990's, rail traffic was frequently halted or "slow ordered" due to periodic development of sinkholes that threatened the track structure and trains. After several dropouts exceeding 30 feet in depth occurred adjacent to the track, a study was completed to assess general subsurface conditions, to develop alternative repair schemes, to provide cost estimates for constructing each option, and to assess the level of long-term risk for the alternatives.
Perceived Risk Versus Cost in Karst Remediation: A Case History
This case history discusses issues associated with a section of Norfolk Southern Corporation (NSC) track located about 30 miles northeast of Knoxville, Tennessee. At this location, the alignment includes a fill embankment that supports a single, curved track crossing the low point of a broad topographic depression. The local geology includes bedrock of the Knox Limestone Formation that is highly susceptible to solution weathering and the development of karst landforms. Beginning in the mid-to-late 1990's, rail traffic was frequently halted or "slow ordered" due to periodic development of sinkholes that threatened the track structure and trains. After several dropouts exceeding 30 feet in depth occurred adjacent to the track, a study was completed to assess general subsurface conditions, to develop alternative repair schemes, to provide cost estimates for constructing each option, and to assess the level of long-term risk for the alternatives.
Perceived Risk Versus Cost in Karst Remediation: A Case History
Vance, J. Samuel (author)
Ninth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst ; 2003 ; Huntsville, Alabama, United States
2003-09-05
Conference paper
Electronic Resource
English
Tennessee , Environmental issues , Risk management , Karst , Case studies , Remediation , History , Railroad tracks , Sinkholes , Costs
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