DYNAMIC CHARACTERISTICS AND DIFFERENCE ANALYSIS OF THE GROUNDWATER IN CHANGCHUN NEW DISTRICT

To further identify the hydrogeological conditions and find the dynamic rule of groundwater of the Changchun New District in Yinma River Basin, the dynamic analysis, contrast coefficient variance analysis and correlation analysis are conducted on the basis of observation data of groundwater during 2016-2018. It is considered that the dynamic characteristics of groundwater are mainly infiltration-evaporation type and infiltration-exploitation type. Groundwater is mainly replenished by precipitation. The water level is affected by both rainfall and mining, with obvious spatial variation. There are notable yet different negative correlations between the groundwater depth and precipitation.