Based On Jinan Urban Rail Transit Construction The Granudwater Flow Field Test Of The Spring

Spring in Jinan, known for many famous and beautiful scenery, is a rare domestic and foreign cities, unique in the museum of natural karst springs. Although Jinan known as the city of Spring, but it is a serious water shortage city, per capita water resources is only the national average of 1 / 10. In recent years, with the economy,rapid social development, and population increase in the number, the amount of over-exploitation of karst groundwater in Jinan, caused the groundwater of springs flow changes, appered some Phenomenon. For example, declining groundwater levels,deterioration of water quality, stopping spurting of spring and so on. To make"spring water and creeping willows in every family,and clear spring upper stone."Study of the groundwater of spring flow in Jinan, carrying out water springs protection work is of great theoretical and practical significance.Save the water to protect the Springs is the great theoretical and practical significance.In this paper,using hydrogeology, hydrology and geochemistry of groundwater dynamics and a variety of disciplinary approaches, including pumping tests, tracer tests, water chemistry cluster analysis, the proportion of normal plasma factor analysis, mineral saturation index, from the perspective of hydrological and groundwater geochemistry angle, analyze the groundwater of spring flow in Jinan.According to the pumping test data of three aquife water in the study area analysis results show that: the quaternary pore water aquife is less rich water, have dynamic stability level, smaller in amplitude, the poor of water quality, more complex of chemical types; the Paleogene fissure water aquife is less rich wate, Relatively stable water level, the complex of chemical types, the poor of water quality; the Karst gruandwater aquifer is high water-rich, have dynamic stability level, the small of annual amplitude, and good quality.The ion composition of Karst gruandwater aquifer's chemistry changing,the factor of main contributions is slightly differen at different times.In the study area,the Karst gruandwater hydrodynamic characteristics is Analysis by tracer test.It show that the Hydraulic connection of Karst water is existed between Sheng Kai Fortune Plaza and investment source. The Karst groundwater runoff is divided into two from Karst recharge area into the study area.It is Baotu spring runoff and Heihuspring runoff. In the west of the Qianfo Mountain Fracture, the karst groundwater flow from SW to NE, too closer to the Qianfo Mountain Fracture too smaller hydraulic gradient.In Lishan road, the karst groundwater flow from S to N, The hydraulic gradient slow down from S to N.Discussion the hydraulic connection of the system of groundwater, analyze the drawdown data aquifer pumping test in typical Lot.It is show that the level of the Pore water and the Paleogene fissure water have better correlation, however, the correlation of level is poor between the Karst gruandwater and the other tow gruandwater.Using the principles of spatial clustering, analyze the water chemistry of typical Lot's water in the study area. It is show that clustering effect among discharge area of the four springs, Qinglong brige and Central Hospital, the Hydraulic connection is closer. The clustering effect is poor among Sheng Kai Fortune Plaza ,Investment source and theinstitute of physical culture, the Hydraulic connection is poor.