Harbin Groundwater Three Dimensional Numerical Simulation And Evaluation

Water resource is the core of urban development pillar and security. With the rapid development of urban construction, urban water demand increasing constantly, the supply and demand balance and adopt the contradiction of dynamic balance show particularly prominent. No matter from the groundwater water quality, water supply ability, engineering cost wait for a respect to look, all is far better than surface water, so the groundwater has become the major source of many cities. Groundwater resources of Harbin city development and more appear important particularly.The thesis mainly based on the computer numerical simulation software GMS construct Groundwater Harbin3-d numerical simulation computer model, the three-dimensional structure of the aquifer system is built in the full collected use existing geological data and the survey on the basis of borehole data, using GMS (Groundwater Modeling System)6.5software of SOLID module, the drilling of between interpolation method. And according to the existing data modeling, the identification and validation, the use of computer technology high working efficiency, high precision and so on characteristics of groundwater resources in Harbin3-d numerical simulation research.Research shows that:(1) status mining conditions5years,20years,50years later underground water level gradually flat, elevation difference has reduces, but the overall situation is similar.(2) the new mining water under the condition of5years,20years,50years later underground water level amplitude is bigger, water main landing in the proposed near water. After50years of groundwater flow, water under the condition of mining in new research area ground water levels fall about0to10m.(3) by GMS of groundwater flow calculation module that the equilibrium phase water resources quantity, details are shown below. Visible expanding mining for groundwater resources played a certain excitation function,2015,2030,2060years to groundwater resource exploitation of the water resources quantity than expand before increased dramatically. And over time, the study area groundwater flow system gradually reached a new dynamic balance.The groundwater system has complicated structure, establishing hydrogeological structure model of the characteristics of big workload. Based on the computer numerical simulation software GMS, besides has strong underground water flow simulation function outside, the flexible data input/output and make all kinds of assignment (parameters, stratified and supply and drainage item) is more hydrological geological significance, in the treatment of the underground water flow simulation model with a unique advantage; In the use of MODFLOW groundwater model, grasps the delamination, grid subdivision, data interpolation, data conversion, boundary and rivers of processing, etc.Skills, can greatly improve the accuracy and efficiency of the model.