The Study On The Influence Of Mining Regulation To The Groundwater Funnel And The Water Quality Security Shijiazhuang

Shijiazhuang city is the political,economic and cultural center of hebei province,which is one of the cities that main water supply source is groundwater in our country.With the rapid development of society,extraction of groundwater resources gradually increase,in a state of overexploitation.Shijiazhuang city appeared drawdown funnel which the area is wodening and the level is declining.So it is likely to cause similar ground subsidence of geological disasters,Groundwater funnel repair can't wait to shijiazhuang.It is based on the the groundwater numerical simulation model of upper alluvial-pluvial fan of Hutuo River,“Shijiazhuang groundwater in comprehensive treatment overexploitation”Formulated by hebei Ministry of Water Resources and the background condition that South-to-North Water Diversion Project Provides7.815?10~8m~3 water to shijiazhuang annually.It set up rural water conservation,adjusting plant structure and planting,reducing mining city,integrated mining reduction four schemes.By model calculation,the unconfined aquifer water level biggest decline are respectively 25.72m,22.7m,23.85m,19.18m,15.34m,Average annual storage is respectively 0.73×10~8 m~3?0.44×10~8 m~3?1.48×10~8 m~3?3.10×10~8 m~3.As for the reducing mining city and integrated mining reduction solutions,Compared with the status quo water level,the water level of Shijiazhuang groundwater funnel area recovery 5.10m,9.90m.Groundwater funnel is no longer significant,they made a great contribution for restoration of groundwater funnel.It establishes the groundwater flow numerical model for Carbon factory which is locatedd in shijiazhuang groundwater funnel.On the basis of the numerical model we establishes solute transport model.We design three schemes,they are respectively present situation of mining,reducing mining city and integrated mining reduction.After a model calculation,At the end of two years the highest concentrations of carbon tetrachloride are respectively 3.6?g/L?4.2?g/L?4.4?g/L,The range of concentration is greater than 2?g/L respectively are 0.0112 km~2,0.0171 km~2,0.0173km~2.We can conclude that For a site with pollution,We can't reduce mining limitlessly for repairing the groundwater funnel.