岩盐储气库水溶建腔岩盐溶蚀模型研究

Research on rock salt dissolving model of gas storage in salt caverns building with water solution

为了深入研究岩盐水溶机理及溶腔形状变化规律,在岩盐水溶物理机理研究的基础上,根据物质平衡原理和Fick第一扩散定律,导出了水溶造腔腔体边界变化的动边界方程,建立了完整的岩盐溶蚀数学模型。通过计算机数值求解方法,对岩盐溶腔过程进行了动态模拟研究。结果表明,该岩盐溶蚀数学模型能够有效的反映腔体形状的变化规律,指导储气库水溶建腔。

The moving bode equation to reflect the rock salt cavern's shape change is derived and the rock salt dissolving mathematic model is built based on matter balance principle and the first diffusing law of Fick.The cavern configuration is simulated by means of computer numerical simulation.The result is that the rock salt dissolving model can reflect the cavern shape changing law and direct the gas storage in the salt caverns building with water solution.