Mechanical Roof Pulling Technique for Evaluating the Effectiveness of Roof Bolting Systems (0cf2f4cc-040f-46e8-9445-670cff7f9e3f)
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 4
- File Size:
- 295 KB
- Publication Date:
- Jan 1, 1976
Abstract
Recently the U.S. Bureau of Mines has undertaken a research project to develop the mechanical roof pulling technique as a method for evaluating the effectiveness and the comparative advantages and disadvantages of various roof bolting systems for underground coal mines, based on the characteristic responses of bolted mine roofs to a prescribed external loading system. Two preliminary experiments of the test method were conducted in the Bureau's Safety Research Coal Mine (SRCM) at Bruceton, Pa., and further trials are underway. The fundamental concept of the test method, the design of test rigs, and the experimental results are summarized in this progress report.
Citation
APA: (1976) Mechanical Roof Pulling Technique for Evaluating the Effectiveness of Roof Bolting Systems (0cf2f4cc-040f-46e8-9445-670cff7f9e3f)
MLA: Mechanical Roof Pulling Technique for Evaluating the Effectiveness of Roof Bolting Systems (0cf2f4cc-040f-46e8-9445-670cff7f9e3f). The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1976.