Table 1 Fractal dimension of regional fractures.

From: Grouting failure mechanism and new pre-grouting reinforcement technology of narrow coal pillar in fully-mechanized caving gob-side entry

Width

Area

  
 

Roof area

Coal pillar area

Roof area of gob-side entry

5 m

1.67

1.64

1.58

6 m

1.68

1.62

1.46

7 m

1.67

1.65

1.39

Back to article page