Evaluation On The Water Supply Security In The City Zone Of BaiQuan

The study area is located in the northern part of the Songnen plain in Hei Longjiang province.The text first introduces the geographic meteorologic, geologic and hydrogeologic conditions to select the suitable model in the calculation part. In the area, the natural recharge is the leakage from the upper aquifer, and the main discharge is the artificial exploitation.The text lays particular emphasis on the evaluation of the groundwater, involves the groundwater type, groundwater chemical characteristics, the amount of the water resource and the natural groundwater amount by using the method of numerical model after the calculation of the parameters, such as transmissivity, the coefficient of the flexible water release, with the data of the pumping test in the research zone. And the paper predicts the flow field in the future fifteen years under the actual exploitment conditions. Results show that there is still the exploitation potential. It also give the evaluation of the quality of water resource needed every year, according to which it appraise the conditions of development and suggests the revolution in utilization of the groundwater in the research area.The test puts forward some hydrogeologic problems existed in the study field and proposes methods to solve these problems.