摘要
通过制作煤岩体相似材料,利用重庆大学自主研发的含瓦斯煤岩热流固耦合三轴伺服渗流装置,研究了三轴应力状态下的变形特性及其渗透特性的关系。研究表明:煤岩体相似材料的力学性质和煤岩体存在一定的相似性;试件的渗透特性与其变形性质有关,渗透率与体积应变有关,体积应变增大渗透率降低。
Based on self-developed triaxial servo-controlled seepage equipment for thermo-fluid-solid coupling of coal containing methane by Chongqing university, the cylindrical specimens which made of similar materials of coal-rock mass produced by coal powder, gypsum and cement pore fracture characteristics and seepage properties were systematically studied,and discussed the intrinsic relationship between stress-strain and permeability of similar material of coal-rock mass. The results shows that the mechanical properties of the similar material of coal-rock mass and coal-rock mass are similar; the permeability of the specimens is related to its deformation properties, the change of permeability is related to the volume strain and it shows that the volume strain increases and the permeability decreases.
出处
《煤炭技术》
CAS
北大核心
2017年第1期140-142,共3页
Coal Technology
关键词
煤岩体相似材料
变形特性
渗透特性
similar materials of coal-rock mass
deformation properties
seepage properties
