岩石孔隙结构三维重构及微细观渗流的数值模拟研究
[Abstract]:In this paper, the pore structure characteristics of porous sandstone are quantitatively studied and analyzed by means of CT scanning, digital image analysis, statistics, fractal geometry and topology. The fractal control function is used to characterize the complex morphology of rock pore structure. Combined with the improved simulated annealing algorithm, the fractal reconstruction model of rock pore structure is constructed, and the geometric parameters and topological properties of the reconstruction model and reference model are analyzed. The similarity between statistical characteristics, mechanical properties and permeability verifies the effectiveness of the fractal reconstruction model of porous sandstone. Aiming at the seepage problem of pore rock, based on the fractal reconstruction model of sandstone, the finite element grid model of pore rock is constructed in this paper. The deformation and failure behavior of pore rocks under uniaxial and triaxial compression is simulated and analyzed by finite element method (FEM). The lattice Boltzmann method (LBM) is used to simulate the fluid seepage behavior in pore rocks, and the results are compared with the seepage experimental results to verify the effectiveness of LBM method. The influence of pore structure deformation on seepage properties of sandstone under load is studied by LBM FEM method. This paper provides a new method and effective means for quantitative analysis and intuitionistic description of the influence of mining deformation of deep rock mass on fluid seepage properties.
【学位授予单位】:中国矿业大学(北京)
【学位级别】:博士
【学位授予年份】:2014
【分类号】:TU45
【参考文献】
相关期刊论文 前10条
1 王宝善,陈楻,葛洪魁,宋丽莉,Wong Teng-Fong;高孔隙岩石变形的离散单元模型[J];地球物理学报;2005年06期
2 张雪芬;陆现彩;张林晔;刘庆;;页岩气的赋存形式研究及其石油地质意义[J];地球科学进展;2010年06期
3 涂新斌,王思敬,岳中琦;香港风化花岗岩细观结构研究方法[J];工程地质学报;2003年04期
4 尹艳树;吴胜和;张昌民;李少华;尹太举;;基于储层骨架的多点地质统计学方法[J];中国科学(D辑:地球科学);2008年S2期
5 ;A statistical model for porous structure of rocks[J];Science in China(Series E:Technological Sciences);2008年11期
6 ;Numerical simulation of mechanisms of deformation,failure and energy dissipation in porous rock media subjected to wave stresses[J];Science China(Technological Sciences);2010年04期
7 王达健,陈书荣,张雄飞,谢刚;多孔介质孔隙模型及其应用——毛细管束模型[J];计算机与应用化学;2001年Z1期
8 陈占清,缪协兴;影响岩石渗透率的因素分析[J];矿山压力与顶板管理;2001年02期
9 陶振宇;试论岩石力学的最新进展[J];力学进展;1992年02期
10 孟巧荣;赵阳升;胡耀青;冯增朝;于艳梅;;焦煤孔隙结构形态的实验研究[J];煤炭学报;2011年03期
相关博士学位论文 前1条
1 刘学锋;基于数字岩心的岩石声电特性微观数值模拟研究[D];中国石油大学;2010年
,本文编号:2480299
本文链接:https://www.wllwen.com/guanlilunwen/chengjian/2480299.html