Structural characteristics of coal mine steel arch supports

• Published in: International journal of rock mechanics and mining sciences & geomechanics abstracts Vol. 27; no. 2; pp. 121 - 127
• Main Authors: Mitri, H.S., Hassani, F.P.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 1990
• Subjects: stiffness; structural analysis; supports
• ISSN: 0148-9062
• DOI: 10.1016/0148-9062(90)94860-V

Strength and stiffness characteristics of mine roadway arch supports fabricated from open steel H-sections are examined. A numerical modelling technique based on nonlinear finite element analysis is employed to simulate three types of steel arch supports which are widely used in coal mining operations. The technique is verified through a comparison of the model response with test results available in the literature. Numerical results are found to provide excellent agreement with experimental results. A comprehensive parametric study which covers both geometric and loading functions involved is then undertaken. Particular emphasis is placed on the influence the load distribution has on ultimate strength and deformational response of the support. Other parameters considered include the support diameter, its shape, the splay leg angle and the section size.