文章从流体力学的基本规律出发，建立了描述湿天然气管道输送调峰工况下瞬变流的数学模型方程，并对模型方程作了简化处理，设计了具体的计算思路。

• In this paper,starting from the basic law of fluid me chanics,a mathematical model equation for describing the tran sient flow of the wet gas in the pipeline under peak shaving op eration is established, a simplified treatment for the model equa tion is made and a train of thought for concrete calculation is de signed.