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Dynamic Tensile Test of Coal, Shale and Sandstone Using Split Hopkinson Pressure Bar: A Tool for Blast and Impact Assessment

Dynamic Tensile Test of Coal, Shale and Sandstone Using Split Hopkinson Pressure Bar: A Tool for Blast and Impact Assessment

Kaiwen Xia, Sheng Huang, Ajay Kumar Jha
Copyright: © 2010 |Volume: 1 |Issue: 2 |Pages: 14
ISSN: 1947-8488|EISSN: 1947-8496|EISBN13: 9781609609689|DOI: 10.4018/jgee.2010070103
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MLA

Xia, Kaiwen, et al. "Dynamic Tensile Test of Coal, Shale and Sandstone Using Split Hopkinson Pressure Bar: A Tool for Blast and Impact Assessment." IJGEE vol.1, no.2 2010: pp.24-37. http://doi.org/10.4018/jgee.2010070103

APA

Xia, K., Huang, S., & Jha, A. K. (2010). Dynamic Tensile Test of Coal, Shale and Sandstone Using Split Hopkinson Pressure Bar: A Tool for Blast and Impact Assessment. International Journal of Geotechnical Earthquake Engineering (IJGEE), 1(2), 24-37. http://doi.org/10.4018/jgee.2010070103

Chicago

Xia, Kaiwen, Sheng Huang, and Ajay Kumar Jha. "Dynamic Tensile Test of Coal, Shale and Sandstone Using Split Hopkinson Pressure Bar: A Tool for Blast and Impact Assessment," International Journal of Geotechnical Earthquake Engineering (IJGEE) 1, no.2: 24-37. http://doi.org/10.4018/jgee.2010070103

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Abstract

The dynamic tensile strength plays a pivotal role in rock fragmentation affecting the overall economics under the present ‘Mine to Mill Concept’. In this paper, a modified SHPB technique and Brazilian test method is presented to test the dynamic tensile strength of coal, shale and sandstone rock samples collected from three opencast mines of Coal India Limited and is compared with the static strength value. The dynamic tensile strength of coal and rock is much higher than static strength and tensile strength of coal and rock samples increase with loading rate. The result shows that the dynamic strength of the coal sample is 1.5 times higher than static strength and the dynamic strength of the sandstone sample is 3 times higher than the static strength.

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