相似材料渗流-能量特性真三轴综合实验系统研发及应用

发布时间：2018-11-07 20:19

【摘要】：为开展采动覆岩破断与卸压瓦斯运移规律的三维物理相似模拟实验,在渗流系数能量控制模型的基础上,研制出相似材料渗流-能量特性真三轴实验系统,并详细介绍系统的主要结构、功能及实验方法。结果表明,该系统可由液压加载系统控制对试件所施加的三轴应力,利用多元测试系统对试件压缩过程中油缸的推出力、试件压缩轴向变形量、压缩过程的气体流量及主裂隙导通时的能量耗散进行实时监测,通过对不同配比相似材料试件的真三轴加载实验,研究三轴压缩相似材料的渗流-能量特性为进一步开展采动覆岩裂隙演化与卸压瓦斯运移多物理场耦合规律奠定了实验基础。
[Abstract]:In order to carry out the three-dimensional physical similarity simulation experiment on the law of fracture and gas migration in mining overburden, a true triaxial experimental system of seepage and energy characteristics of similar materials was developed on the basis of the energy control model of seepage coefficient. The main structure, function and experimental method of the system are introduced in detail. The results show that the system can control the triaxial stress applied to the specimen by the hydraulic loading system, and use the multicomponent test system to measure the pushing force of the cylinder during the compression process and the axial deformation of the specimen. The gas flow rate in compression process and the energy dissipation during the main fracture conduction are monitored in real time. The true triaxial loading experiments of specimens of similar materials with different ratios are carried out. The study of the percolation and energy characteristics of similar materials under triaxial compression lays a foundation for the further development of the coupling law between the fracture evolution of mining overburden rock and the multi-physical field of gas migration under pressure relief.
【作者单位】：西安科技大学安全科学与工程学院;教育部西部矿井开采及灾害防治重点实验室;
【基金】：国家自然科学基金(51327007);国家自然科学基金(51174157,51604219) 中国博士后科学基金项目(2016M602843) 西安科技大学科研培育基金(201651)
【分类号】：TD315;TD712

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