Status of abandoned mines in Huaihe River source and their groundwater environmental problems
As an important water source area for"South-to-North Water Diversion"and a national ecological function protection pilot ar-ea,the groundwater resources in Huaihe River source may face different ecological problems due to the influence of infiltration of water from abandoned mines and inflow of water into surface water.This paper analysed the extent of groundwater pollution and groundwater pollution source problems in Tongbai County and Xinyang,Huaihe River source,from the aspects of hydrogeological characteristics,a-bandoned mine status,pollution sources,pollution pathways,and physical migration of pollutants.The groundwater level of Huaihe River source was controlled by seasonal rainfall and surface water,and mainly belongs to submerged type;the changes of heavy metal elements such as cadmium,mercury,arsenic,lead,chromium,copper,nickel,zinc and other heavy metal elements in the soil were monitored,and the risk value of soil pollution in agricultural land was evaluated,and the indicators of the value of conductivity,pH,ORP,RDO of the water of the abandoned mines were statistically counted,and the extreme value,the mean,the standard deviation,and the coefficient of variation were calculated for each of the indicators.Considering the diffusion of groundwater,the presence of heterogeneous media and multiphase flow,the basic principles of fluid mathematics and partial differential equations were used to describe the changes in concen-tration or pressure of pollutants at different time and spatial positions,which were used to analyze and predict the behavior of groundwa-ter pollution diffusion.
Huaihe River sourceabandoned mines statuspollution levelpollution characteristicssoil testing
万方数据
维普
