GEOSYNTHETIC CONFINED PRESSURIZED SLURRY (GEOCOPS): SUPPLEMENTAL NOTES FOR VERSION 1.0

Tubes in the context of this report are made of several geosynthetic sheets sewn together to form a shell capable of encapsulating slurry. The slurry is sufficiently fluid so that it is possible to hydraulically fill the tube. After the slurry is pumped in, the geosynthetic shell acts as a "cheesecloth", allowing the liquid to seep out while retaining the solid particles. The availability of a wide selection of geosynthetics in terms of strength, durability, and permeability enables the use of hydraulically filled tubes in many applications, some of which may be considered critical (e.g., encapsulating contaminated soil). This report presents an overview of an analysis to calculate both stresses in the geosynthetic and geometry of the tube. It also verifies the correctness and validity of the results obtained from a computer program developed to solve the problem. An instructive parametric study implies that the most critical factor needed to ensure successful construction is the pumping pressure; a slight accidental increase in this pressure may result in a very significant stress increase in the encapsulating geosynthetic. Pressure increase, however, has little influence on the storage capacity of the tube. Guidance in selecting an adequate geosynthetic, including partial safety factors and permeability, is also presented. Design aspects associated with the required spacing of inlets and head loss of the slurry as it flows through the tube are considered outside the scope of this report. The scope of this report is limited to the design aspect of selecting a geosynthetic.

• Supplemental Notes:
  • This study was part of the Construction Productivity Advancement Research (CPAR) Program. The CPAR project for which the work was performed is titled, "The Development and Demonstration of Dredged Material Containment Systems Using Geotextiles", and is a collaborative effort between the Waterways Experiment Station and the Nicolon Corporation, Norcross, Georgia. The report is accompanied by a diskette containing GeoCoPS (version 1.0).
• Corporate Authors:

  Leshchinsky, Incorporated

  33 The Horseshoe
  Newark, DE  United States  19711

  U.S. Army Waterways Experiment Station

  3909 Halls Ferry Road
  Vicksburg, MS  United States  39180-6199
• Authors:
  • Leshchinsky, D
  • Leshchinsky, O
• Publication Date: 1996-9

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 54 p.

Subject/Index Terms

• TRT Terms: Contaminants; Encapsulation; Geosynthetics; Permeability; Safety factors; Shape; Slurry; Soils; Stresses
• Uncontrolled Terms: Contaminated soils; Geometry (Shape)
• Old TRIS Terms: Slurries
• Subject Areas: Design; Environment; Geotechnology; Highways; Materials; Safety and Human Factors; I20: Design and Planning of Transport Infrastructure; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00728430
• Record Type: Publication
• Report/Paper Numbers: Interim Report, CGAR-GL-96-1, Technical Report
• Files: TRIS
• Created Date: Nov 14 1996 12:00AM