In-Situ Monitoring of Infiltration-Induced Instability of I-70 Embankment West of the Eisenhower-Johnson Memorial Tunnels, Phase III

Details

• Creators:
  Wayllace, Alexandra ; Lu, Ning ; Mirus, Benjamin
• Corporate Creators:
  Colorado School of Mines ; United States. Geological Survey (USGS)
• Corporate Contributors:
  Colorado. Dept. of Transportation. Research Branch
• Subject/TRT Terms:
  • Infiltration
  • Monitoring
  • Instability
  • Embankments
  • Unsaturated soils
  • Landslides
  • Testing
  • Infiltration-induced landslides
• Publication/ Report Number:
  CDOT 2021-08
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Draft
• Corporate Publisher:
  Colorado. Department of Transportation
• Abstract:
  A new methodology that uses recent advances in unsaturated soil mechanics and hydrology was developed and tested. The approach consists of using soil suction and moisture content field information in the prediction of the likelihood of landslide movement. The testing ground was an active landslide on I-70 west of the Eisenhower/Johnson Memorial Tunnels. A joint effort between Colorado School of Mines, CDOT, and USGS performed detailed site characterization, set up and calibrated a hydro-mechanical model of the site based on seven years of field data, and performed a stability analysis of the slope. Results indicate that consecutive years of high or low infiltration have a compounding effect so that the slope stability is influenced by the preceding years. Additionally, a new drainage system is proposed based on analysis of the current horizontal drains.
• Format:
  PDF
• Funding:
  411013042
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/88565/dot_88565_DS1.pdf
• File Type:
  [PDF - 8.83 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a6fe614bf5270d7aa7a92c3a924fb86174f826e0e8133c19598dd9b7d59cfc17665a8a8bb98e03bef35151ffd68dfbb8318cec47806ee91549a9786ea94c727c