Details:

Personal Author:
Beus, M. ; Iverson, R. ; Dreschler, A. ; Scott, V.
Beus, M. ; Iverson, R. ; Dreschler, A. ; Scott, V. Less -
Corporate Authors:
Spokane Research Laboratory (National Institute for Occuparional Safety and Health)
Conference Authors:
U.S. Rock Mechanics Symposium (37th : 1999 June 6-9 : Vail, Colorado)
Description:
This paper describes research to improve safety during transport of ore and waste in underground mines. Field tests are underway in mines in Idaho and Montana. Strains measured on structural support members in an ore pass provided information about total forces acting on the structure as material was dumped into it. Results show that measured static loads were considerably less than actual total weight of the material dumped and that dynamic loads were subject to many factors, such as effects of blasting to remove hang-ups. Comparisons of measurements and computer results using a particle flow code indicated that several difficulties remain before achieving realistic determinations and models of the dynamic effects of particle flow in ort: passes and impact loads on the gates. Impact loads were overestimated in computer analyses as compared to loads measured in field tests. An alternative design approach based on softening the chute and control gate assembly is being proposed.
Subject:
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Mining

Source:
Rock Mechanics for Industry - Proceedings of the 37th U.S. Rock Mechanics Symposium, Vail, Colorado, June 6-9, 1999. Rotterdam, Netherlands: A. A. Balkema Publishers, 1999 Jun; :489-495
Document Type:
Book Chapter
Genre:
Conference Publications
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:305459b8195fec71dc14fee24750a9aec581df9532ad71f4d1cec0d4439db39e
File Type:

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