摘要
首先以介质中裂隙的方向分布为基础,将孔隙裂隙双重介质分为弱随机分布裂隙介质、分组分布裂隙介质、强随机分布裂隙介质3类。然后将岩体的主要渗流通道——裂隙引入到逾渗研究理论中,以裂隙数量分布分形规律的基础,建立了强随机分布裂隙介质的逾渗模拟方法。通过数值计算的方法研究了强随机分布裂隙介质逾渗现象与逾渗规律,得到了以裂隙分形维数、裂隙数量分布初值、孔隙率为变量的逾渗阈值的数学表达式。
On the base of direction of crack in various media,the porosity and fracture media are separated to partially random distribution fracture media,group distribution fracture media and fully random distribution fracture media.Then,the main seepage of rock mass with cracks is introduced in the percolation theory.On the base of fractal laws of crack number distribution,the simulation method is proposed,which can be used for the percolation of fully random distribution fracture media.By the numerical simulation method,the percolation phenomena and percolation law are studied,the mathematical expressions of percolation threshold that contains crack fractal dimension,initial fractal constants of crack and pore rate,are obtained.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第z2期3904-3908,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(50404017)
山西省自然科学基金资助(20050017)
关键词
岩石力学
强随机分布裂隙介质
孔隙裂隙双重介质
逾渗规律
裂隙分布
rock mechanics
fully random distribution fracture media
porosity and fracture double-media
percolation law
distribution of cracks
