Design guidelines for horizontal drains used for slope stabilization.

Pohll, Greg M.; Carroll, Rosemary W.H.; Reeves, Donald M.; Parashar, Rishi; Muhunthan, Balasingam; Thiyagarjah, Sutharsan; Badger, Tom; Lowell, Steve; Willoughby, Kim A.; University of Nevada System. Desert Research Institute

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Design guidelines for horizontal drains used for slope stabilization.

2013-03-01
By Pohll, Greg M. ; Carroll, Rosemary W.H. ; Reeves, Donald M. ; ...

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English

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Creators:

Pohll, Greg M. ; Carroll, Rosemary W.H. ; Reeves, Donald M. ; Parashar, Rishi ; Muhunthan, Balasingam ; ... More +

Pohll, Greg M. ; Carroll, Rosemary W.H. ; Reeves, Donald M. ; Parashar, Rishi ; Muhunthan, Balasingam ; Thiyagarjah, Sutharsan ; Badger, Tom ; Lowell, Steve ; Willoughby, Kim A. Less -
Corporate Creators:

University of Nevada System. Desert Research Institute
Subject/TRT Terms:

[+]

Fractured Rock Geotechnical Engineering Groundwater Horizontal Drains Hydrogeology Rotational Landslides Shear Strength Slope Failure Slope Stability Subsurface Drainage Translational Landslides
Publication/ Report Number:

WA-RD 787.1
Resource Type:

Tech Report
Geographical Coverage:

Washington
Corporate Publisher:

Washington (State). Dept. of Transportation. Office of Research and Library Services
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Soils and Geology
Abstract:

The presence of water is one of the most critical factors contributing to the instability of hillslopes. A common

solution to stabilize hillslopes is installation of horizontal drains to decrease the elevation of the water table

surface. Lowering the water table dries a large portion of the hillslope which increases the shear strength of the

soil, thereby decreasing the probability of slope failure The purpose of this manual is to provide a single

comprehensive reference for geotechnical engineers and hydrogeologists on designing horizontal drainage

systems to improve slope stability. Guidelines are provided for translational and rotational failure and consider

fractured systems. Basics of hydrogeologic and geotechnical terminology, site characterization and

conceptualization, groundwater modeling techniques and template projects help to guide the user with respect

to identifying important parameters to drainage design. An iterative approach is presented for determining the

minimum drain construction to lower water levels enough to keep the factor of safety (FOS) greater than 1.2.
Format:

PDF
Funding:

GCA6381
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:d3548b5a037024bac1d69ad4471618636f5d21ebea2683d8b9c39a4bdeb5b97b
Download URL:

https://rosap.ntl.bts.gov/view/dot/25843/dot_25843_DS1.pdf
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Design guidelines for horizontal drains used for slope stabilization.

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