Analysis of the effect of mining coal on the water environment in the Panxie mining area of Huainan

摘要

Large areas of dynamic ground subsidence,caused by mining activities in Huainan,results in corresponding changes in the surface waters.The horizontal and vertical flow relationship had a fundamental change on the water quantity and quality.More surface water areas and shallow groundwater were caused by the ground deformation and vertical subsidence.The Panxie mining area of Huainan was chosen as research object and 13 observation wells were set.Through the open and closed plain subsidence area model,and the shallow groundwater observation system which conform to the reality,the field real-time and dynamically observation data have been obtained,and the reciprocal transformation between surface and underground water quantity has been calculated by finite element and vibration wave method.The results showed that in an enclosed subsidence area,the relationship between surface-and groundwater is the ground recharge of surface water with a relatively small quantity.While in open subsidence areas,they recharge through each other.