Evaluation of Groundwater Resources in Yangjiazhangzi Economic Development Zone

YangJiazhangzi is an economic development zone,located in HuLudao.Because of excessive exploitation and utilization of mineral resources in early days,the development of economy,the environment and the health in development zone is urgent,and the water resources become the primary factor restricting economic development.The groundwater in Yangjiazhangzi area consists of pore-water valley,bedrock fissure water and karst fissured water.The methods of recharge and discharge are adopted to calculate groundwater resources,analyze water balance and calculate available water resources.The recharge of groundwater resources in Yangjiazhangzi is up to 210.87×104 m3/a,the discharge of groundwater resources is 294.98×104 m3/a,and the available groundwater resources can be up to 155.76×104 m3/a..The groundwater is in negative state of equilibrium.In Karst areas,under 20%,50%,75% guarantee rate,the available exploitation yield are 103.46,86.6,75.38×104 m3/a,respectively.Combining with the existing exploitation amount,the countermeasures are put forward to develop,utilize and protect water resources.