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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2015
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Article
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Tab 12
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Research Article
Hierarchic Analysis Method to Evaluate Rock Burst Risk
Table 12
Physical and mechanical characteristics of coal and surrounding rock and quantitative scores.
Impact energy index
<1
1–1.5
1.5–3
3–5
>5
Elastic energy index
<1
1-2
2–3.5
3.5–5
>5
Scores
2
4
6
8
10