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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.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | State or Local Government Series |
| Title | In-situ monitoring of infiltration-induced instability of I-70 embankment west of the Eisenhower-Johnson Memorial Tunnels, phase III |
| Series title | Colorado Department of Transportation Report |
| Series number | 2021-08 |
| Year Published | 2021 |
| Language | English |
| Publisher | Colorado Department of Transportation |
| Contributing office(s) | Geologic Hazards Science Center |
| Description | 84 p. |
| Country | United States |
| State | Colorado |
| Other Geospatial | Straight Creek slide location |
| Google Analytic Metrics | Metrics page |