块裂介质岩体变形与气体渗流的耦合数学模型及其应用

在详细论述岩体基质岩块与裂缝变形,气体渗流及相互作用物理机制的基础上,提出了块裂介质岩体变形与气体渗流的耦合数学模型及其数值解法,这是岩体介质固气耦合数学模型的重要发展,以含裂缝煤层瓦斯抽放为例,通过数值分析,揭示了含裂缝煤层瓦斯在基质岩块和裂缝中运移,传递和交换,伴随的岩体裂缝和基质岩块变形和应力分布,及其对瓦斯气体运移的相互作用影响规律。

Coupled mathematical model for solid deformation and gas seepage of rock matrix-fractured media and its applications

Based on detailed expounding the interactional physical mechanism of solid deformations and gas seepage in rock matrix and fracture, the coupled mathematical model of solid deformation and gas seepage and its FEM numerical method for rock matrix-fractured media is presented, it's a vital advance for coupled mathematical model of solid deformation and gas seepage of rock mass media. An example of methane extraction in coal seam which contains fractures is set up, by numerical analysis of FEM, laws of methane transfer, exchange in rock matrix and fracture are presented, the interaction law among accompanying rock deformation, stress distribution and methane transfer in rock matrix and fracture is also presented.