Research And Analysis Of Recoverable Water Resources In Dabaodang Of Yulin

Groundwater has been the superior resource of water supply since the ancient times.Groundwater has a very important role in production and living in semi-arid and arid regions in northwest of our country, because it has outstanding quality, widely distributed, and convenient to acquire. Since the 21 st century, people increasingly recognize that groundwater is not only a kind of precious natural resources, but also a very sensitive elements in natural ecological environment, unreasonable land development exploitation of groundwater resources will produce such as vegetation degradation, land subsidence, land desertification,aquifer unwatering and a series of serious ecological environment problems. So, when people for the development and utilization of groundwater resources, the rational mining method of argument is particularly important.Big cover when the water source is located in yulin city in northern shaanxi province territory, the groundwater mainly occurs in the aquifer Sarah WuSu group, prudential formation is throughout the study area, have played an important role in between the bottom part. In this paper, the big cover when the water source of the regional geological background and complex seepage zone aquifer condition were studied. Will study area approximately as a homogeneous, isotropic, two-dimensional diving model of unsteady flow, through GMS software model for grid subdivision in the studied area, according to the big cover when mining area and the observation data, the simulation period is divided into four stress period,analysis of aquifer in the study area in each section of pumping test showed different characteristics, as well as around the period of the difference of strata occurrence conditions,the parameters of the aquifer is generally divided into three different areas, many times the hydrogeological parameters for inversion and flow field were used respectively to compare the two methods of model fitting and error analysis of reliability analysis, finally make the precision of the model of the requirements.Preliminary provides the water source of groundwater exploitation plan, through the roleof the study area of three different mining intensity, forecasts the decades of confirmed when the water level drawdown within this trend and the change of typical well point level duration curve. Finally, the protection and exploitation of water resources in the study area provides the Suggestions.