Isoparametric Finite-element Three-dimension Groundwater Model For Fracture-karst Water Resources And Numerical Simulation In Jinan Springs Zone

Jinan is the capital of Shandong Province, which takes groundwater as the major source for water supply. With development of the economy, groundwater in the Jinan springs zone was exploited increasingly, and water level was so low that springs can't spurted any longer, even not at all in whole year. How to restore the scenery of springs spurting has been hotspot issue and aim for governments and scholars. The paper selects the subject entitled "the isoparametric finite-element three-dimension groundwater (FE3DGW) model for fracture-karst water resources and numerical simulation in Jinan springs zone", which is one sub-task of items on "exploitation and springs protection of Jinan fracture-karst water (No.200001)"In this paper, the following questions are discussed:First, According to the site survey, and other relative datum, the condition of physical geography, geography and hydrogeology are summarized. Then the concept model of research zone and the isoparametric FE3DGW model for Jinan springs zone is presented, and based on datum of 2001,2002, we evaluate groundwater resources by means of numerical method.Second, we apply the isoparametric FE3DGW model to evaluating groundwater resources in Jinan springs zone, and present and optimize geography and hydrogeology parameters. As far as Jinan fracture-karst water resources system concerned, keeping spring spurting and water supply are two major object functions, which are incompatible each other, while they are interdependent.Third, five schemes based on the combination different precipitation and pumping quantity is applied to the model prediction to predict the water laver in springs zone and high-point groundwater quantity exploited in 2010.Finally, some questions that are relative with isoparametric FE3DGW model, such as prediction for rainfall are presented and applied to evaluation for Jinan fracture-karst water resources. From the concept of system, the ultimate metabolic equation of groundwater for protecting water resource is discussed here.All conclusions we sum up in the paper are important to manage Jinan Fracture-karst water resources.