裂隙岩体三维渗流网络搜索及稳定渗流场分析  

THREE-DIMENSIONAL SEEPAGE NETWORK SEARCHING OF FRACTURED ROCK MASS AND STEADY SEEPAGE FIELD ANALYSIS

作　　者：李海枫[1] 张国新[1] 朱银邦[1] 

机构地区：[1]中国水利水电科学研究院,北京100038

出　　处：《岩石力学与工程学报》2010年第A02期3447-3454,共8页Chinese Journal of Rock Mechanics and Engineering

基　　金：水利部行业公益科研专项(200801007);"十一五"国家科技支撑计划项目(2008BAB29B05;2006BAB04A01);国家自然科学基金资助项目(50909105)

摘　　要：从实际工程结构面统计资料以及结构面本身渗流特性出发,结合逾渗理论分析裂隙岩体渗流网络的组成特点,研究三维块体切割技术与逾渗理论在裂隙类型分类上的相似性问题,进而在既有三维块体切割技术基础上增加渗流面阻水特性判断等模块,形成三维渗流网络搜索算法,解决三维渗流网络难以建立的问题。并在此基础上,根据Louis公式和广义达西定律编制裂隙岩体三维渗流网络搜索及恒定流分析程序3D-Network-Seepage.f90,用于裂隙岩体三维渗流网络构建与恒定渗流计算分析。然后,结合算例对该方法进行验证,结果表明:所提方法不仅能够生成客观、正确的渗流网络,还能准确地反映裂隙面水流的运动规律以及裂隙网络中实际水流的流动趋势,但该方法还有待于在实际工程中进行验证。Combining with percolation theory,the composition characteristic of fractured rock seepage network is analyzed according to the statistic data and seepage characteristic of discontinuity in practical engineering;and the similarity problem of three-dimensional block cutting technology and percolation theory in fracture classification is also studied. The identification module for water-block characteristic on seepage fractures plane is added based on three-dimensional block cutting technology;and three-dimensional seepage network searching algorithm is formed finally to solve the problem that three-dimensional seepage network is difficult to be established. According to Louis formula and generalized Darcy law,a program named 3D-Network-Seepage.f90,which can solve the problem of three-dimensional seepage network searching in fractured rock and analyze steady seepage,is developed by this algorithm. Combining with a classical example,this method is proved that it not only can form objective and valid seepage network,but also reflects the laws of water movement on fracture plane and the actual flow trend in fracture network. However,this method is expected to be proved in practical project in the future.

关 键 词：岩石力学 裂隙岩体 渗流网络搜索 稳定渗流 

分 类 号：TU45[建筑科学—岩土工程]