The Study Of Regional Hydrogeological Conditions And Groundwater Circulation In Turpan Basin

The complexity and concealment of groundwater system make it difficult to fully understand groundwater system. For alone time people have tried to use various methods to understand groundwater system. But the only part information of the groundwater system can be obtained.Groundwater is the receptor and information carrier in the environmental change. Based on the theory of groundwater system, distilling and assimilating the isolated and scattered information Can reduce the uncertainty, and can help us to accurately understand groundwater system in the original. Turpan Basin groundwater system, for example, combined with a variety of techniques and conventional hydrogeological analysis, quantitative extraction and integration of fragmented information in an integrated system view of the hydrogeological conditions ofthe area and groundwater circulation.Turpan Basin, located in Xinjiang Uygur Autonomous Region NW China, itsunique geographical location has form unique warm temperate arid desert climate,the region’s scarce precipitation, dry climate, strong evaporation. In inlandgroundwater without precipitation recharge cycle worth exploring. In this paper, theuse of existing data, a full analysis of the hydrogeological conditions of the area. TheGOCAD software built in the area of three-dimensional geological and threedimensional hydrogeological model, the use of GMS software to the numericalsimulation of groundwater in the study area, and select a typical profile for furtherstudy. Finally, according to the inland basin groundwater cycle discussed thecharacteristics of groundwater circulation. The conclusions as follows:(1) The use of the GOCAD software to simulate three-dimensional geologicalmodel of the study area, and the use of sequential Gaussian simulation to simulate the hydrogeological model of the area, the results in line with the actual situation, andcan be used for the calculation of the flow model.(2) Using GMS software to simulate the region’s groundwater resources, and topredict the groundwater level change after20years, the study pointed out that inaccordance with the existing water balance model,20years after the highest groundwater table decline13m, due to the region’s groundwater exploitation ismainly used for agricultural irrigation, so basically does not result in a decrease inthe oasis area.(3) The typical profile of hydraulic modeling shows that the region’s watercycle can be divided into the local flow system, intermediate flow system andregional flow system, local flow system mainly developed in the North Basin, NorthBasin and South Basin have hydraulic connection, but the amount of water is verysmall, accounting for only3.72%of the total amount of water cycle. Once this partof the groundwater polluted will be difficult to repair.