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对盐岩地层建设地下储气库的溶腔数学模型进行了研究。为了设计和形成稳定的溶腔形态，依据流体力学、化学动力学及物质平衡原理，对水溶建腔机理进行了分析，建立了盐岩溶腔溶质传输—流体流动数学模型；根据流体力学基本原理和对流扩散理论以及物理模拟基本规律，建立了盐岩溶解速度方程；并通过数值方法对腔体态进行了模拟研究。结果表明，在合理的工艺条件下，通过盐岩水溶开采可以获得稳定的腔体形态，以满足地下储气库的要求，从而为盐穴储气库的溶腔设计提供理论依据和决策手段。

Mathematical Model of Chamber Building with Water Solution for Gas Storages in Salt Beds

The mathematical model of chamber build ing with water solution is studied for underground gas stor age building in salt beds. To design and form a stable cham ber configuration, the mechanism of chamber building with water solution is discussed based on the basic theories of hy drodynamics and chemistry dynamics. A mathematical model is developed for solute transmission and fluid flowage in the salt beds. According to the diffusion theory and the principle of material equilibrium, the dissolution velocity equation is established. Also, the in-house experiment data are tested and verified with numeral simulation method. The results show the model can be used for the practice of chamber building with water solution. Under proper process condi tions, the stable chamber shape can be obtained with solution mining of salt beds to meet the requirements of underground gas storages.