Masters Theses


"Horizontal drains have been widely used to stabilize soil and rock slopes for the past 50 years. The current technology for this technique involves the installation of slotted PVC drains through the use of horizontal boring equipment. In this research, a new improvement to this technique has been developed and tested at the University of Missouri--Rolla. This improvement involves using wick drain material, currently installed vertically for expediting consolidation, as a replacement for PVC drains. The wick drain is installed horizontally using a simple driving method that requires no soil boring. This technique was tested by installing the drains in a field-scale test embankment. Tests were conducted to simulate both transient and steady-state phreatic conditions. Water levels, drainage amount, and slope movements were analyzed for each test. The results were used to determine the factor of safety improvement resulting from the installed drains. The tests showed that under certain conditions, the horizontal wick drains did lower the phreatic surface and improve the factor of safety of the slope. The design of horizontal drains for slope stabilization is also discussed. A design chart and a method of determining drain spacing, drain length, and the resulting increase in the factor of safety is also presented"--Abstract, page iii.


Santi, Paul M. (Paul Michael), 1964-

Committee Member(s)

Elifrits, C. Dale
Stephenson, Richard Wesley


Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Geological Engineering


Funding for this research was provided by the following sources:

  • University of Missouri Research Board
  • Appleyard Fund
  • Transportation Research Board of the National Academy of Science
  • American Wick Drain Corporation.


University of Missouri--Rolla

Publication Date

Spring 2000


ix, 93 pages

Note about bibliography

Includes bibliographical references (pages 88-92).


© 2000 James Arnold Liljegren, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Thesis Number

T 7726

Print OCLC #


Electronic OCLC #


Link to Catalog Record

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