山东兰陵县会宝岭铁矿地下水纵向演化及防治水措施OA

In order to reveal vertical evolution characteristics of groundwater in Huibaoling iron deposit and the recharge sources of deep groundwater,guide the prevention and control of water hazards in deep min-ing areas,by using the Durrov diagram,vertical evolution characteristics and hydrogen and oxygen isotope characteristics of TDS,Cl-,Na+and SO42-have been analyzed,and the evolutionary characteristics of groundwater across different layers in Huibaoling iron deposit and the recharge sources of deep metamor-phic rock fissure water and fault water have been revealled.It is indicated that except for F3 and F3-1fault zones,concentrations of TDS,Cl-,Na+and SO42-of deep metamorphic rock fissure water are significantly higher than those of shallow groundwater across various layers.It is a groundwater zone dominated by static reserves.As indicated by δD and δ18O characteristics,the recharge is primarily from static reserves,with minimal contribution from shallow groundwater.The concentrations of Cl-and Na+of the groundwa-ter near F3 and F3-1 fault zones are nearly identical to those of shallow groundwater,while the concentra-tions of TDS and SO42-are also significantly closer to those of shallow groundwater.The F3 and F3-1 faults are water-conducting channels.Focusing on deep metamorphic rock fissure water,strong drainage and grouting countermeasures have been proposed for preventing water in deep metamorphic rock fractures.Pointing to F3 and F3-1 faults,suggestions for advanced water exploration and pre grouting of working faces have been put forward as well.