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中文摘要：
提出孔隙裂隙双重介质固气耦合理论；将夹层视为多孔连续介质，层间结构面视为裂隙介质，在建立双重介质固气耦合微分控制方程的基础上，提出双重介质固气耦合模型的求解策略并开发三维有限元计算程序；对含夹层盐穴储气库的天然气渗漏规律进行数值研究。研究结果表明：夹层、层间裂隙区为应力降低区，透气性远比岩盐体的强；在内压p=8MPa时，在2a的运行时间里，仅在距库壁125m处夹层和层间裂隙内出现0．2MPa的气压，气体渗漏率先增加后减小，最终保持平稳，表明在含夹层的岩盐矿床内建造地下储气库是可行的。
英文摘要：
The pore and fracture dual media model for solid-gas coupling was put forward to study natural gas seepage in rock salt natural gas storage with interlayers. In coupling model the interlayers were regarded as pore continuous medium, structural planes between layers were regarded as fracture medium. Based on the differential control equations of the coupled solid-gas processes of dual media, strategy and methods to solve this mathematics model were also studied. A three dimensional FEM code for analysis of coupled solid-gas processes of dual media was developed. Natural gas seepage in rock salt natural gas storage with interlayers in Jintan Salt Mine was simulated. The results show that the interlayer and fractures are stress-relaxed area, gas permeability in interlayer and fractures is far larger than that of rock salt. In rock salt natural gas storage with internal air pressure p=8 MPa, in a operation period of 2 years, 0.2 MPa barometric pressure only occurs in the fractures and the interlayers within 125 m apart from the storage wall. Natural gas leakage rate increases at first, then reduces, and finally holds the line. This indicates that the underground natural gas storage constructed in the rock salt deposit with inter-beds is feasible.
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