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Mathematical Problems in Engineering
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Special Issues
Mathematical Problems in Engineering
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2013
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Article
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Tab 3
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Research Article
Escape-Route Planning of Underground Coal Mine Based on Improved Ant Algorithm
Table 3
Value of parameter
.
Visibility distance (m)
Coefficient
>20
1
10–20
1.25
5–10
2.95
3–5
6.25
<3
12.5