POLYMERIC MATERIALS FOR UNDERGROUND SUPPORT

The Spokane Mining Research Center of the Federal Bureau of Mines is placing major emphasis on chemical stabilization as part of the ground support program. Development of polymeric material suitable for bonding rock fractures around the mine opening is one phase of the program. Some of the problems that must be considered are viscosity, applicability, adhesion, cure times, strength, toxicity, and flammability. Epoxies and polyesters were investigated, but shrinkage in polyesters caused redirected effort toward epoxies. Test results with the latter showed that bonded fractures in mine-roof strata were stronger than the virgin rock. Further tests showed that polymeric materials have good potential for bonding, and in conjunction with polymer roof bolts, are expected to result in an economic and useful new support concept.

• Corporate Authors:

  Bureau of Mines

  C Street Between 18th and 19th Streets, NW
  Washington, DC  United States  20241
• Authors:
  • Franklin, J C
  • Fraley, J E
  • Burnham, R E
  • Brandt, L W
• Publication Date: 1974-4

Media Info

• Features: Figures; References; Tables;
• Pagination: 21 p.

Subject/Index Terms

• TRT Terms: Bonding; Epoxides; Excavations; Polyester resins; Polymers; Soil stabilization
• Uncontrolled Terms: Stabilization
• Old TRIS Terms: Epoxy; Roofbolting
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00260299
• Record Type: Publication
• Report/Paper Numbers: Rpt. No RI-7836
• Files: TRIS
• Created Date: Oct 11 1974 12:00AM