This paper describes a testing facility recently constructed at Spokane Research Center, Spokane, Washington. Rock bolting is the most widely used support method in underground mining today with over 100 million roof bolts being used in the United States each year. Despite this wide usage, the theory of roof bolting remains undeveloped and many installations rely on previous experience alone rather than any rational design. A basic understanding of how different types of roof bolts perform their desired function is sadly lacking. Underground tests designed to provide this knowledge have been only partially successful. This is mainly due to the many uncontrollable variables present in the underground mining situation. Consequently, the Bureau has decided to conduct a laboratory study in which these variables can be more tightly controlled and measured. The purpose of this study is to increase our basic knowledge of how roof bolts function, and to verify and improve current mathematical models. This information, joined with the results of other Bureau projects, will provide a basis for more effective roof control plans and help establish regulations for fully-grouted and conventional bolting systems. (Author)

  • Corporate Authors:

    Idaho Transportation Department

    3311 W State Street, P. O. Box 7129
    Boise, ID  United States  83707-1129

    University of Idaho, Moscow

    Department of Geology and Geological Engineering
    Moscow, ID  United States  83844-3025

    Idaho State University, Pocatello

    Department of Geology
    Pocatello, ID  United States  83201

    Boise State University

    Department of Geology and Geophysics
    Boise, ID  United States 
  • Authors:
    • Pettibone, H C
  • Publication Date: 1980-4

Media Info

  • Features: Figures;
  • Pagination: p. 145-166

Subject/Index Terms

Filing Info

  • Accession Number: 00334063
  • Record Type: Publication
  • Created Date: Sep 16 1981 12:00AM