Application of fracture network model with crack permeability tensor on flow and transport in fractured rock

Jian Bang Pan, Chen Chang Lee, Cheng Haw Lee, Hsin Fu Yeh, Hung I. Lin

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Very efficient and practical models that use a crack tensor in terms of fracture geometry parameters for field rock mass are proposed. A framework of the crack tensor approach combined with the identifying fracture-controlled characteristics was successively used in a hypothetical hydro-geological field for determining the dynamics of flow and transport of nuclides in fractured rock. The modeling results and site-specific data of Lan-Yu Island in Taiwan reveal the characteristics associated with the geometry of fracture networks under the prescribed boundaries. The simulated fracture networks were transformed into a grid-based simulation procedure under consideration of the delaying effect in matrix owing to particle migration. Synthetic flow results indicate that the flowing vector is very sensitive to fracture intensity (P32); high fracture intensity leads to high velocity. Heterogeneity generated by fractures' field will result in the shortest and the longest transmission distance of 12-fold difference. While taking into consideration of the ingrowth-decay transport, the plumes of the daughter product were relatively tortuous and anomalous to predict.

Original languageEnglish
Pages (from-to)166-177
Number of pages12
JournalEngineering Geology
Volume116
Issue number1-2
DOIs
Publication statusPublished - 2010 Oct 27

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geology

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