摘要
根据裂隙岩体的渗流机理对岩体裂隙网络中的渗流进行了合理简化和假设,以渗流立方定理、质量守恒定理和水流不可压缩假设为基础建立了裂隙网络的有压渗流模型,用改进DDA算法得到了裂隙几何信息,并用PCG算法和可视化编程技术开发了相应的计算程序。通过与Grenoble试验对比,验证了程序的合理性。对DECOVALEX项目的二维BMT模型进行了初步渗流计算,获得了均匀和非均匀裂隙条件下不同的渗流规律。该结果为研究岩石裂隙网络的应力—渗流耦合效应奠定了基础。
Seepage process in rock fracture network is theoretically simplified according to the flow mechanism of fractured rock mass. Based on cubic law,law of conservation of mass and assumption that water is incompressible, a model for seepage in the rock fracture network is established. An improved DDA method is used to obtain the geometrical data essential for seepage calculation and then a program named SeepFract is developed with PCG method on the platform of visual C＋ ＋6.0. Through the comparison with the experimental work of Grenoble, we check the validity of the program and then calculate primary seepage calculation with the 2D BMT model from the DECOVALEX project. The achieved results can lay an important foundation for the further analysis of coupled mechanical and seepage mechanism of fractured rock mass.
出处
《水电能源科学》
北大核心
2009年第4期50-53,共4页
Water Resources and Power
