Evalution Of Groundwater Resources And Analysis Of Exploitation Potential In Chahar YouyiQianqi-Jining District

Water is the most important resource on the earth,the lifeblood of the people's life and the national economy.In recent years,with the rapid increase of population and the rapid development of social economy,the exploitation of groundwater resources is increasing,the groundwater pollution is aggravated,the rational exploitation and utilization of groundwater has become the precondition of social economic development and ecological environment in our country.Therefore it is necessary to make reasonable evaluation of groundwater quantity and quality,in order to achieve the sustainable use of water resources.The Chahar Youyi Qianqi-Jining District in the south-central part of Inner Mongolia Autonomous Region is in a relatively poor areas of water resources area.In recent years,with the rapid increase in population and the rapid development of social economy,existing groundwater resources can not meet the water source area of industrial production and residential water demand.The main purpose of this study is to evaluate the groundwater resources in the study area,analyze the potential of groundwater exploitation,optimize the groundwater exploitation plan,and provide a basic basis for the rational development and utilization of groundwater in the region.Based on the collection of meteorological,hydrological,geological and hydrogeological data in the study area,analyzes the hydrogeological condition,including occurrence rules,condition of groundwater recharge,groundwater runoff and groundwater discharge,water yield property,groundwater regime characteristic and chemical type of groundwater in the study area.After that,using hydrogeological test results,the appropriate hydrological parameters were used to evaluate the groundwater resources by the water balance method.On top of that,the potential of groundwater resources exploitation in The Chahar Youyi Qianqi-Jining District was analyzed,and the reasonable mining was proposed Program.The possible environmental geological problems caused by groundwater exploitation are analyzed,suggested groundwater resources protection.It is positive balance under the current conditions of the study area and negative balance under the multi-year average conditions.The current year total recharge is16352.51×104m~3/a,the current exploitation is 6971.24×104m~3/a,the average recharge is13420.06×104m~3/a,and the allowable groundwater withdrawal is 7676.37×104m~3/a,.The calculated potential index of groundwater exploitation in the study area was 1.10,which is in the balance state of exploitation and recharge.Two of the existing water sources still have a certain exploitation potential,but it is not recommended to expand the exploitation immediately,and the existing exploitation should be kept for later use.