Types of tunnel section for gas storage cavern

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Conceptual model for fractures

2022, 44(10): 1890-1898.

Influences of softening behaviour of coal on evolution of its permeability by considering matrix-fracture interactions .

Figures of the Article

Tables of the Article

方案围压/MPa 注气压力/MPa 边界条件

1 7 1 恒围压

2 7 3 恒围压

3 7 5 恒围压

4 5 3 恒压差

5 6 4 恒压差

6 7 5 恒压差

 Experimental schemes of different boundary conditions

参数	取值
煤杨氏模量 ${E_{\text{t}}}$ / GPa	3.766
裂隙杨氏模量 ${E_{\text{f}}}$ /GPa	1.461
基质杨氏模量 ${E_{\text{m}}}$ / GPa	6.366
泊松比 $\nu$	0.339
气体黏度 $\mu$ /(pa $\cdot$ s)	1.84×10^-5
形状因子f/m^-2	1
初始渗透率 ${k_0}$ /m²	1.80×10^-18
煤的密度 ${\rho _{\text{c}}}$ /(kg·m^-3)	1250
初始孔隙压力 ${p_0}$ /MPa	0.1
裂隙的初始孔隙率 ${\phi _{\text{f}}}_{\text{0}}$ /%	2
基质的初始孔隙率 ${\phi _{\text{m}}}_{\text{0}}$ /%	2.6

Physical and mechanical parameters in simulations

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