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Volume 35 Issue 1
Feb.  2016
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Article Navigation >  CARSOLOGICA SINICA  > 2016  >  35(1): 81-86
WU Ya-zun, LIN Yun, WAN Jun-wei, WANG Zi-jie. Coupled fluid flow and dissolution model and associated parameter sensitivity analysis in a single carbonate rock fracture[J]. CARSOLOGICA SINICA, 2016, 35(1): 81-86. doi: 10.11932/karst201601012
Citation: WU Ya-zun, LIN Yun, WAN Jun-wei, WANG Zi-jie. Coupled fluid flow and dissolution model and associated parameter sensitivity analysis in a single carbonate rock fracture[J]. CARSOLOGICA SINICA, 2016, 35(1): 81-86. doi: 10.11932/karst201601012
shu

Coupled fluid flow and dissolution model and associated parameter sensitivity analysis in a single carbonate rock fracture

doi: 10.11932/karst201601012
  • 1.

    Institute of Resources & Environment, Henan Polytechnic University

  • 2.

    School of Environmental Studies, China University of Geosciences

  • Publish Date: 2016-02-25
    Abstract
  • Karst groundwater system is evolved from fracture water bearing medium of carbonate rock; the evolution process of this system is determined by the initial fracture network characters and boundary conditions. In order to reveal the influence degree of fracture medium and boundary conditions on the evolution of karst system, the fracture dissolution model which coupled fluid flow and dissolution was established, and the characteristics of single fracture propagation under different boundary conditions were simulated and analyzed. The results show that the increase of fracture aperture due to karst water dissolution process, rise of hydraulic gradient, initial fracture aperture and equilibrium calcium concentration will accelerate the karst evolution. Among these parameters the initial fracture aperture influences the process most significantly, while hydraulic gradient and equilibrium calcium concentration have the same remarkable impact. Moreover, with the increase of the parameter values, the parameter sensitivity gets much smaller.

     

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