摘要
为了探究破碎泥岩微观结构和渗流参数的实时变化对渗流系统结构稳定性的影响,采用自主研制的破碎岩石三轴渗透试验系统并结合稳态渗透法和轴向位移控制法,对级配破碎泥岩进行三轴渗流试验。结果表明:有效孔隙度、渗透率、非Darcy流β因子的变化均与轴向载荷和围压有密切关系,且得到了渗流失稳时渗透率和非Darcy流β因子之间的关系和发生渗流失稳的主要条件。
In order to explore the influence of real-time change of broken rock microstructure and seepage parameters on structural stability of seepage system, through the application of the self- developed tri-axial penetration test system, the steady penetration method and axial displacement control method, the seepages of the graded broken mudstone are tested on tri-axial basis. The results are as follows： the changes of effective porosity, permeability and non-Darcy flow/3 factor are closely related to axial load and confining pressure, during the time of the instability of the seepage flow, the relationship between the permeability and the non-Darcy flow/3 factor is obtained, and the main conditions of the seepage instability are provided.
出处
《煤炭技术》
北大核心
2017年第12期100-103,共4页
Coal Technology
基金
国家自然科学基金(51374236
51174158)
国家自然科学基金科学仪器基础研究专款(51327007)
