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Advances in Civil Engineering
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2018
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Article
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Tab 4
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Research Article
The Influence of Heading Rate on Roof Stability in Coal Entry Excavation
Table 4
Results of the Brazilian disc test.
No.
Tensile strength (MPa)
Average tensile strength (MPa)
1
1.72
2.18
2
2.80
3
1.65
4
2.02
5
2.35
6
2.56