The Study Of Groundwater Resources Evaluation And Development Mode In Eastern Mountain Of Jilin Province Zone

With the development of eastern mountain area of Jilin province on social economy and accelerate the pace of urbanization,additionally regional,seasonal,resources,pollution induced water shortage,and the existence of many factors,demand for water and water quality has risen sharply.Therefore,this article select topic on the basis of project of " Compilation of 1:50 000 hydrogeological atlas in jilin province ",to evaluate the groundwater resources,analysis of groundwater development pattern research is particularly important.This paper clarified the topography,hydrology,geology,tectonics and other natural conditions,analysis of groundwater,groundwater distribution area;drawing dynamic map of groundwater dynamic analysis of groundwater dynamic type,through analysis on the hydrochemical characteristics of groundwater recharge;according to the existing data by using the method to calculate the groundwater resources quantity;according to the existing water quality data and "the ground water quality standard"(GB/T14848-93)for groundwater water quality assessment through using note grading method;and Analysis of factors affecting water quality by factor analysis.According to the distribution of water resource and flowing type,groundwater types,hydrogeological conditions and water use(spring,urban water,industrial water,agricultural water,decentralized water,mineral water,hot water)analysis the groundwater development mode.1.To clarify the geological and hydrogeological conditions of the research area and analyze the dynamic type and water chemistry characteristics of groundwater in the research area.The main distribution of rainfall infiltration is in the valley,tableland and Cenozoic basin;The main distribution of runoff is in Mesozoic basin and basalt hole fissure water distribution area.The main distribution of precipitation infiltration is in the area of water distribution of carbonate fissure.The main distribution of spring drainage is in the area of the fissure water distribution in basalt cave.The radial flow is mainly distributed in the rock fissure water area.Groundwater chemical types mainly hydrocarbonate-calcium water,hydrocarbonate-calcium sodium water,hydrocarbonate-sodium calcium water,salinity is generally less than 0.5 g/L,PH value of 6.10 to 8.49,the central plains of groundwater in jilin city part iron manganese content is higher;Warm spring water,geothermal water,special mineral water in study area contain trace elements mainly for the metasilicate,lithium,strontium,aluminum,borate,which has the highest concentration of silica acid.2.Spatial analysis of groundwater resources and water quality assessment(1)the uneven distribution of groundwater resources in the study area,in the valley of loose rock pore water area,JingYu basalt platform,plateau,Dunhua Changbai lava basalt platform region of rich groundwater resources;The groundwater resources are abundant intableland area of Yishu basin,the region of the river,the water of the sinkhole and the area of Hunchun basin.In the Yishu basin,Sanyuanpu-yangzishao syncline,HunJiang synclinesoutheast,Dunhuasouthwestern and Changbai basalt plateau southern and other basins in clastic rock pore fissure water areas,groundwater resource is medium;Other areas have poorer ground water resources.(2)the study area water quality is generally good,mainly for 1 to 2 classes,including local groundwater quality is poorer,city region for 4 to 5 classes,mainly affected by human factors;In Changchun and Siping part of the agricultural irrigation area,the water quality is 4-5,mainly due to human factors;In the area of Huifa river valley in Huinan county and in the urban areas of Jilin city,the high levels of iron and manganese are mainly influenced by the native environmental factors.In the hot spring in Changbai mountain,some iron,manganese and fluoride content are high,mainly influenced by native environmental factors.The other areas are mainly affected by the migration-enrichment factor and the primary environmental factor.3.The development mode of groundwater is studied by geomorphology,groundwater type and use analysis.Yinma River,and Yitong River Valley Huifahe River and wavy platform area in the area,suitable for wells in centralized mode,mainly suitable for mining;The river valley,such as the rafah,the mudanjiang river,the bulhatong river and the haianjiang river,is suitable for the mining mode of the ditches,which is mainly concentrated in mining;well local centralized development model of Mesozoic basin area;well combining with spring development patterns suit carbonate karst fissure water area,to focus on mining;In basalt tableland in Jingyu and Changbai lava plateau,suit cited spring development pattern,to focus on mining;in the Dunhua region of the basalt platform,suitable for well combining with spring development patterns,to focus on mining;the groundwater resources ofbedrock fissure area are relatively poor,suited well combining with spring development patterns,using decentralized mining method.