J4 ›› 2011, Vol. 41 ›› Issue (4): 1136-1143.

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Numerical Model of Groundwater Flow in Karst Underground River System, Southwestern China

DONG Gui-ming1, SHU Long-cang2, TIAN Juan3, JI Ye-fei2   

  1. 1.The School of Resource and Earth Science, China University of Mining and Technology, Xuzhou222116,Jiangsu,China;
    2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing210098,China;
    3.City and Environment College, Xuzhou Normal University, Xuzhou222116,Jiangsu,China
  • Received:2010-10-29 Online:2011-07-26 Published:2011-07-26

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Abstract:

In order to analyze the circulation of karstic water in underground river system, the hydrogeology conceptual model of this system was established, the system has a strong hydraulic connection with peripheral porous media and distribute in saturated zone with centralized discharge. The water movement character and corresponding equation in various aquifer medium was given, also the discrete way and solving method of the model were given. The problems about the porous water and fissure water free water table, conversion between confined and unconfined, the conversion between laminar flow and turbulent flow, time scale and sinkhole were analyzed, the program UGRFLOW09(Underground river flow model) for calculating about water flow motion numerical model of underground river system was compiled. This study shows that the proposed numerical model was effective.

Key words: karst, underground river system, multiple medium, numerical methods

CLC Number: 

  • P641.7
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