期刊
APPLIED SCIENCES-BASEL
卷 12, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/app12062844
关键词
fracture network; fractured rock mass; topological representative element volume; topology; permeability
类别
资金
- Major Research Program of the National Natural Science Foundation of China [91747204]
- Research Program of China Three Gorges Corporation [XLD/2118]
- China Scholarship Council [202006710075]
Studying the topological characteristics of fractured rock mass can help estimate the topological representative element volume (TREV) and accurately calculate the permeability representative element volume (PREV), simplifying the seepage calculation process.
The representative element volume (REV) of the fractured rock mass is the basis for its homogenization, and is essential for the study of groundwater seepage. In order to determine a simple method for estimating REV, we studied the topological characteristics of the fractured network. We propose the concept of topological representative element volume (TREV) for estimating the fractured rock mass. The topological structure can reflect many properties of the fractured rock mass, to which a great deal of attention has been paid. We examine the applicability of eleven topological parameters as the equivalent parameters of the TREV. According to the selected equivalent parameter, the TREV of twenty-three kinds of fractured rock mass were calculated and then compared with the permeability representative element volume (PREV). The results show that the size of TREV and PREV are essentially the same for a given rock mass. In other words, the PREV can be estimated accurately using the TREV for the rock mass with orthogonal connected fracture networks. The advantage of using TREV to estimate PREV is that there is no need for complex seepage calculations, as the calculation of TREV only needs to account for the geometric characteristics of the fracture network.
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