水利论文翻译(原文及译文).doc

Study of flow and transport in fracture network using percolation theory Haihong Mo a，Mao Bai b，*，Dezhang Lin b，Jean-Claude Roegiers b Department of Civil Engineering, South China University of Technology, Guangzhou, China b Rock Mechanics Institute, The University of Oklahoma, Norman, OK 73019，USA Received 27 August 1996; received in revised form 3 February 1998; accepted 3 February 1998 Abstract A fracture network model based on algebraic topology theory has been developed to study fluid flow and solute transport in fracture dominant media. The discrete fracture network is generated stochastically while the flow and transport in each individual fracture are solved using a continuum approach. Alternative to the traditional formula-tions, the fracture geometries, connectivities and flow characteristics follow a topological structure appropriate to the class of fracture networks or systems. The innovative natures also include the development of a transport mecha-nism in which dispersive-convective solute migration through discrete fracture network can be evaluated. ? 1998 Elsevier Science Inc. All rights reserved. Keywords: Percolation; Fractures; Topology; Flow; Transport Introduction In the fractured dominant media，fluid flows mainly through fractures. Since the hydraulic be-havior of a rock mass is largely determined by the geometry of the fracture system，the field in-vestigations of flow in fractured rock have clearly demonstrated that modeling the rock as a homogeneous continuum can create serious simplifications. Goodness-of-fit statistics show that the semi-analytic models do not calibrate as well to measured heads as do the continuum models. A porous media modeling approach is restricted because of the heterogeneities，such as fractures， which cannot be explicitly included in the modeling. Thus，in order to analyze the hydraulic be-havior of massive rocks， the necessary step includes a detailed description of the characteristics and geometries of individual di