基于固—气耦合物理相似模拟的实验装置研究

Research on gas-solid coupling physical similar simulation experiment device

采动裂隙演化与卸压瓦斯渗流耦合的物理相似材料模拟实验是研究采动影响下煤岩体渗透率变化规律及分布特征的基础,文中通过研制"固—气"耦合物理相似模拟实验台,设计耦合实验中的开采系统、充气系统和测试系统,进行了相似模拟实验及渗透率测定。开采系统保证箱体气密性的同时实现了煤层的模拟开采,测试系统验证了试验箱内气体在岩层中的流动规律符合达西定律,进而验证了实验装置的可行性,从而为研究采动裂隙场时空演化与卸压瓦斯渗流耦合规律的相似模拟实验奠定实验基础。

The foundation of research on permeability laws of variation and distribution characteristics is the evolution of mining-induced fractures and the released methane seepage coupling physical similar simulation experiment.Through the development of gas-solid coupling physical similar simulation experiment device,solved the mining system,pneumatic system and test system,using the experiment,verified the reliability of this device,which lays foundation for further experimental research of analogue simulating tests on the coupling laws of time-space evolution of mining-induced fractures and the released methane seepage.