瓦斯事故已严重制约了煤矿安全高效生产，深入开展煤岩瓦斯“固-气”耦合物理相似模拟实验，研究采动影响下卸压瓦斯运移规律，提高瓦斯治理效率，为实现煤与瓦斯安全共采提供理论基础具有重要意义。在系统总结近年来“固-气”耦合理论、物理模拟固相相似材料及物理模拟“固-流”耦合相似材料的研究成果和最新进展的基础上，指出“固-气”耦合相似材料的研制及在物理相似模拟实验中的应用是今后的研究重点，也为开展采动影响下卸压瓦斯运移物理相似模拟实验提供基础。 利用煤岩体应力平衡方程、采动裂隙场变形控制方程及瓦斯渗流连续方程等建立煤岩瓦斯“固-气”耦合模型，结合相似理论推导出煤岩瓦斯“固-气”耦合相似条件。应用岩石力学、流体力学、正交实验综合因素分析法等基本理论与方法，对煤岩瓦斯“固-气”耦合物理模拟相似材料在不同配比下制作的试件，开展力学性质、渗透特性测试实验，总结出胶结剂含量对试件抗压强度、渗透性的影响，并拟合出适用于实验配比的公式，确定模拟不同种类岩石时，材料的相应配比。 利用自行研发的相似模拟实验台，对煤岩瓦斯“固-气”耦合相似材料在模型实验中进行验证，对煤层开采过程中煤层底板应力变化、覆岩渗透性变化及来压步距与其渗流速度之间的关系进行了系统的分析。据此，可认为研制的煤岩瓦斯“固-气”耦合相似材料满足开展物理相似模拟实验的要求。为实验室开展采动影响下煤岩瓦斯“固-气”耦合物理相似模拟实验提供了基础。

The gas accidents have seriously restricted the safe and efficient production of coal mines. The studies on the coal-methane solid-gas coupling simulation experiments and the relieved methane delivery behaviors and improving methane controlling efficiency are of great significance to the simultaneous extraction of coal and coal bed methane theory. According to the studies and progress of solid-gas coupling theory, solid similar materials and solid-fluid coupling similar materials in simulations recently, the development and application of solid-gas coupling similar materials are the emphasis in later researches. It’s also the basis of simulation experiments of relieved gas delivery. The solid-gas coupling model was build using stress equilibrium equation, mining fissures deformation controlling equation and gas seepage continuity equation. Combining with simulation theory, the similarity conditions of solid-gas coupling were deduced. Based on rock mechanics, fluid mechanics and orthogonal experiments composite factors analysis, the mechanical properties and permeability of specimens with different proportion were analyzed. The influence of cementing agent on compressive strength and permeability were concluded and the suitable proportion equation was fitted. The corresponding proportion to different rocks were obtained. Using self-developed simulation experimental system, the application of material was verified. The floor’s stress changing behavior, the overlying strata’s permeability changing behavior and the relationship between roof weighting step and permeability were analyzed. So, the coal-methane solid-gas coupling similar material can fulfill the experiment requests. It can provide the basis for the coal-methane solid-gas coupling simulation under the influence of mining.