Dealing with the analysis of three dimensional fluid flow in a fractured anisotropic rock mass, an effective and practical simulation method is provided for the calculation of ground water flow in the rock mass where hydropower project is constructed. Fractures in a rock mass can be divided into dominant fracture system and network fracture system. A distinct medium method is applied to describe flow in the dominant fracture system while a continuum method is applied to describe flow in the network fracture system. The two systems are coupled together by hydraulic head and flux to constitute a coupled model. A method for the calculation of equivalent porous permeability is presented by using the fracture geometry data in a network fracture system. The results show that the coupled approach can effectively reflect the special effects of dominant fractures in terms of permeability and the properties of rock matrixes in terms of water storage.
|Qinghua Daxue Xuebao/Journal of Tsinghua University
|Published - 1998
ASJC Scopus subject areas
- General Engineering
- Computer Science Applications
- Applied Mathematics