00335184

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http://onlinepubs.trb.org...s/trr/1980/783/783-003.pdf

https://scholar.google.co...ster&publication_year=1980

Subsurface water may act in many ways to reduce the stability of cuts and embankments. Among these are decrease in cohesion, subsurface erosion, lateral pressure in fractures and joints, and excess pore-water pressure. One way of removing subsurface water is to use horizontal drains, which are holes drilled into an embankment or cut slope and cased with a perforated-metal or slotted-plastic liner. The equipment, materials, and procedures used in the drilling and installation of horizontal drains have been improved and refined considerably since the California Division of Highways first introduced the Hydrauger in 1939. The development of polyvinyl chloride pipe, improvements in drill bits and drill stem, and the development of drilling machines capable of producing high thrust and torque have made subsurface drainage a significant and economical alternative in the repair and prevention of some types of landslides. (Author)

Publication of this paper sponsored by Committee on Engineering Geology. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01411601

pp 16-20

1980

Transportation Research Record

59th Annual Meeting of the Transportation Research Board

0309031710

Print

Figures (5) ; Photos (3) ; References (10)

Alignment; Drains; Drilling; Embankments; Groundwater; Landslides; Pipe; Polyvinyl chloride; Prevention; Repairing; Subsurface drainage

Horizontal alignment; Repairs

Geotechnology; Highways; Security and Emergencies; I42: Soil Mechanics

TRIS, TRB

Sep 16 1981 12:00AM

• HORIZONTAL DRILLING BY USING AN ORIENTED CORE AT WHEELER JUNCTION, COLORADO
• LONG-TERM PERFORMANCE OF HORIZONTAL DRAINS
• MISSISSIPPI'S EXPERIENCE WITH HORIZONTALLY DRILLED DRAINS AND CONDUITS IN SOIL
• ROCK CLASSIFICATIONS: STATE OF THE ART AND PROSPECTS FOR STANDARDIZATION
• ROCKWOOD EMBANKMENT SLIDE BETWEEN STATIONS 2001+00 AND 2018+00: A HORIZONTAL DRAIN CASE HISTORY
• UNIFORM ROCK CLASSIFICATION FOR GEOTECHNICAL ENGINEERING PURPOSES
• USE OF HORIZONTAL DRAINS: CASE HISTORIES FROM THE COLORADO DIVISION OF HIGHWAYS