厚硬顶板弱化前后垮落致灾数值模拟研究
吕闹,汪海波
Numerical Simulation of Collapse Disaster Before and After Weakening of Thick and Hard Roof
Nao LV,Haibo WANG
表2
煤体及空气计算参数
Table 2
Calculation parameters of coal and air
材料
密度/(kg·m
-3
)
杨氏模量/GPa
泊松比
屈服强度/MPa
C
0
C
1
C
2
C
3
C
4
C
5
C
6
μ
煤体
1 270
5.08
0.28
10
-
-
-
-
-
-
-
-
空气
1.18
-
-
-
0
0
0
0
0.4
0.4
0
1.745×10
-5