Determining Landslide Drain Lifecycle for Development of Maintenance and Operation Manuals

Leshchinsky, Ben A.; Abed, Mahrooz; Peethambaran, Bipin

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Determining Landslide Drain Lifecycle for Development of Maintenance and Operation Manuals

Supporting Files

2026-07-01
By Leshchinsky, Ben A. ; Abed, Mahrooz ; Leshchinsky, Ben A.

File Language:

English

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Creators:

Leshchinsky, Ben A. ; Abed, Mahrooz ; Leshchinsky, Ben A.
Corporate Creators:

Oregon. Department of Transportation. Research Section
Contributors:

Mohney, Curran ; Glover-Cutter, Kira M.
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Drains Evaluation Hazard Mitigation Horizontal Drains Hydrology Landslide Mitigation Landslides Manuals Monitoring Numerical Control Performance Pollutants Transportation
Publication/ Report Number:

FHWA-OR-RD-27-02
Resource Type:

Tech Report
Geographical Coverage:

United States ; Oregon
Edition:

Final Report
Corporate Publisher:

Oregon. Department of Transportation. Research Section
Abstract:

In this project, numerical models are proposed to evaluate the (1) mechanisms and transient drawdown from horizontal drains for a wide range of geometric conditions using simplified design charts, (2) siltation mechanisms and timing for various drain geometries and grain sizes as a means of determining "time until failure" using simplified design charts, and (3) a simple machine learning model to estimate transient drawdown using an ArcGIS toolbox. Further, hydrologic data from the HWY20 Pioneer Mountain-Eddyville realignment was analyzed and used to develop robust observation-based criteria for evaluating drain performance at a systems level, explored through proposed hazard matrices that guide actions regarding inspection and intervention. These criteria are intended for less frequent, but more robust evaluation of performance. Simple criteria for individual, more frequent drain monitoring is provided in a checklist form, along with template inspection guidelines and examples of satisfactory or unsatisfactory drain performance. Lastly, in collaboration with the OpenS lab at Oregon State University, a low-cost, open-source flowmeter system was designed and developed as a future means of monitoring discharge from horizontal drain systems.
Format:

PDF
Funding:

SPR-834
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:f14762063153ec62ed8e91bbe4a4d217c58311f0dde17fe623c0e56aabf03de6d71adb0229ea18a389131d274d73f4d05af85dfc80aed0e1a824d3b254fa6ede
Download URL:

https://rosap.ntl.bts.gov/view/dot/92658/dot_92658_DS1.pdf
File Type:

[PDF - 41.42 MB ]

File Language:

English

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