管道-裂隙岩溶含水介质非均质性的水文效应
Hydrologic Effects Caused by the Heterogeneity of Karstic Conduit-Fissure Medium
  
DOI:
中文关键词:  管道-裂隙介质  非均质性  SWMM模型  水文效应  数值模拟
英文关键词:conduit-fissure medium  heterogeneity  SWMM  hydrologic effects  numerical simulation
基金项目:国家自然科学基金(41172203;41201029);中央高校基本科研业务费专项资金项目(河海大学2012B00314)
作者单位
束龙仓 河海大学水文水资源学院 
张颖 江苏省水利工程规划办公室 
鲁程鹏 河海大学水文水资源学院 
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中文摘要:
      非均质特征性是含水介质其的固有的特性之一,而含水介质的非均质特性又对自然界的水文循环,地球浅层地质演变具有积极的贡献,同样含水介质非均质性也因此是评价复杂地下水系统时所面临困难的最根本原因。本研究通过采用SWMM模型首先对水文过程进行的模拟了室内模拟试验的水文过程,在此基础上利用该模型研究了管道-裂隙岩溶含水介质非均质性对系统水文过程的影响。结果证实表明,SWMM对模拟管道-裂隙含水系统水文过程的有效性,并初步得到了管道尺寸,、含水介质空隙度和地下水与地表水水量交换系统对系统出口处的水位和流量过程的影响均较小,但管道尺寸对地下水的最高水位有一定的控制作用,;含水介质空隙度对地下水水位的增长和消落过程有一定影响,;地下水与地表水水量交换系数则是对地下水水位的变化率和其能达到的最大值有着重要的影响。模拟结果证实,利用SWMM模型模拟管道-裂隙含水系统的水文过程是有效的。
英文摘要:
      The heterogeneity is one essential property of karstic medium, resulting in the complicated hydrologic cycle and shallow geologic evolution. Moreover, the heterogeneity of medium also leads to the high difficulty for the evaluation of groundwater flow system and solute transportation. The SWMM developed by EPA (U.S. Environmental Protection Agency) was used in this study to simulate the hydrologic process conducted at the laboratory. The hydrologic effects of the heterogeneity were discussed through the calibrated SWMM model. The results indicate that SWMM model is appropriate to model the karstic hydrologic process for the conduit-fissure medium. The conduit size, the medium void and the exchange coefficient of groundwater and surface interaction has slight effect on the water level and discharge of the outlet of drainage area. However, the conduit size controls the highest groundwater level, the magnitude of medium void can change the process of groundwater increasing and decreasing, and the exchange coefficient has significant effects on the change speed of groundwater level and the highest groundwater level.
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