含湿度效应的煤层注热多物理场耦合模型

Coal Seam Heat Injection Multi-physics Coupling Model with Humidity Effects

煤层注热是近几年提出的一种新型的瓦斯强化抽采方法,在煤层注热过程中,水蒸气湿度的增加会影响煤层瓦斯的抽采效果。为了了解水蒸气的湿度效应对煤层注热过程的影响,在前人研究成果的基础上,运用传热学、渗流力学、弹性力学等相关理论,加入了水蒸气湿度的影响并建立了含湿度效应的煤层注热多物理场耦合模型。模型的建立有助于今后进行数值分析及相关实验室实验。

Coal seam heat injection is a new way of strengthening drainage gas. In the thermal process in the coal seam, the increase of steam humidity will affect the extraction of coal seam gas. In order to grasp the effect of humidity on the steam injection thermal process, on the basis of previous research and heat transfer, fluid mechanics, theory of elasticity, adding the effects of humidity, the thermal coal injection multi-physics coupling model with humidity effects is established. The model is helpful for future numerical analysis and related laboratory experiments.