The Analysis And Simulation Study Of Groundwater Conservation In Huantai County

With the rapid expansion of urbanization,water demand also increased rapidly.Over the years,the total groundwater water supply in Huantai County has exceeded half of the total water supply.Due to the high development and utilization of groundwater in Huantai County and the concentrated exploitation in some areas,the groundwater level continues to decline and forms multiple landing hopnels.At present,the government of Huantai County has taken active measures to use the ADB loan to conduct a comprehensive improvement of the underground water funnel area,forming a regional water network of "three horizontal,four vertical and one wetland".Although the connection of the regional water system has a certain role on the groundwater conservation,it lacks the corresponding scientific and theoretical support and comprehensive evaluation basis,and cannot conduct an accurate,quantitative or qualitative analysis of the groundwater conservation effect.Therefore,it is necessary to study the underground water conservation rules in Huantai County according to the regional water network and provide rational development,efficient utilization and effective protection.We find the main factors affecting the changes and conduct correlation analysis,then construct the change trend of groundwater level in Huantai groundwater model and predict the groundwater dynamic changes.The main studies are as follows:(1)groundwater dynamic changes and their influencing factors analyzed the groundwater dynamic changes in time and space,and intuitively observed the dynamic changes of groundwater buried depth in year and mid-year in different regions.Analyze the influencing factors(precipitation,mining quantity,river water level)that may cause the dynamic changes in groundwater,quantitatively analyze the interannual and intraannual changes of each factor in the time series,and have an in-depth understanding of the change characteristics of each factor.And analyze the main influencing factors of groundwater change according to the dynamic changes of groundwater.(2)Establish the groundwater mathematical model.First,determine the hydrogeological parameters of the study area(including water supply degree,permeability coefficient,precipitation supply coefficient,precipitation supply coefficient and diving evaporation coefficient based on the collected data),use the groundwater numerical simulation software GMS to establish the groundwater model,constantly adjust the initial value of the parameters,and determine the optimal parameters after the identification and verification,so as to correctly reflect the hydrogeological conditions of the study area.(3)Prediction of groundwater recharge effect under different scenarios According to the scheduling technology and regulation and storage capacity,two different scenarios are set up to simulate the change law of regional groundwater level change under different scenarios and predict the groundwater recharge effect,so as to provide a decision-making basis for flood control scheduling and ecological treatment of river and lake water network.