瓦斯压力/MPa
拟合曲线
R2
0.5
k = 4.245 e − 0.595 σ 3
0.9692
1.0
k = 5.9521 e − 0.4225 σ 3
0.8599
1.5
k = 1.0537 e − 0.1191 σ 3
0.9243
2.0
k = 3.8324 e − 0.2105 σ 3
0.9366
3.0
k = 2.0114 e − 0.0947 σ 3