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Volume 35 Issue 4
Aug.  2016
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Article Navigation >  CARSOLOGICA SINICA  > 2016  >  35(4): 363-371
WANG Jin-li, CHEN Xi, ZHANG Zhi-cai, KANG Jian-rong, GAO Man. Computation of fracture water flow based on discrete fracture network model[J]. CARSOLOGICA SINICA, 2016, 35(4): 363-371. doi: 10.11932/karst20160403
Citation: WANG Jin-li, CHEN Xi, ZHANG Zhi-cai, KANG Jian-rong, GAO Man. Computation of fracture water flow based on discrete fracture network model[J]. CARSOLOGICA SINICA, 2016, 35(4): 363-371. doi: 10.11932/karst20160403
shu

Computation of fracture water flow based on discrete fracture network model

doi: 10.11932/karst20160403
  • 1.

    State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University；College of Hydrology and Water Resources, Hohai University；School of Geography, Survey and Planning, Jiangsu Normal University

  • 2.

    State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University；College of Hydrology and Water Resources, Hohai University

  • 3.

    School of Geography, Survey and Planning, Jiangsu Normal University

  • Publish Date: 2016-08-25
    Abstract
  • Discrete fracture network (DFN) model is one of the most effective means to study the flow path and groundwater flow in a fractured rock aquifer. Based on statistical distributions of geometrical and hydraulic parameters of fractures, two-dimensional discrete fracture network is realized through using Monte Carlo stochastic simulation technology. Fracture network connectivity is determined based on adjacency matrix of undirected graph and backbone or distinct preferential flow path is preserved using recursive algorithm. Flow model of DFN is built using numerical-analytical method on the basis of cubic law and seepage continuity equation; and this model is used to solve fluid flow under different boundary conditions. The results show that this method can simulate the total flux into the regional domain in the direction of hydraulic gradient, head at internal nodes and flow in channels as well as variation of flow direction at internal nodes. It provides a practical and feasible method for flow estimation of regional karst fissure water.

     

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