Research On Emergency Water Source Regulation Capability Of Caofeidian In Hebei

China’s rapid economic development and population growth has brought a significantincrease in water demand, a serious waste of water, inappropriate development and utilizationof a range of issues. The acceleration of urbanization and shortage of water resources into thecity’s conflicts have seriously hampered China’s urbanization process, also restricts the overalldevelopment of our national economy. Tangshan Caofeidian in coastal areas, water shortagesin north China’s relatively plain, low per capita water resources, water shortage is a watershortage area. The caofeidian industry rise and the rapid population growth, water demandmust increase significantly. This topic Caofeidian water shortage situation, the extensivecollection of previous work, based on the analysis of regional hydrogeological conditions andgroundwater development and utilization, through the route survey, select the piedmontalluvial fan as the regulation and storage target. Through the analysis of hydrogeologicalconditions of storage target, delineating the scope of the emergency water source. To correctlyappraise the estimated the contingency ability and storage capacity, is the scientific planningand rational use of groundwater resources of the premise.Through collecting the data, calculation of groundwater resources are divided intosuperficial and deep layers in this paper. The main mining is in the level state of negativebalance, the average annual total negative balance of the region is3627.16×10~4m~3/a, wherea negative balance for the shallow is2876.42×10~4m~3/a, deep negative balance for the994×10~4m~3/a.This paper by using numerical method of study area, a numerical simulation aregeneralized as two aquifer, a semi-permeable layer. The first simulation of the aquifer to divein fresh water, salt water in a confined water area for the second simulated aquifer for theconfined water, as between the two aquifer aquitard. In the study area of the plane usingrectangular mesh generation, mesh of88rows132columns, side length of0.5km×0.5km.July2000to December2007for the simulation period, simulated the groundwater during thecourse of the whole region, the groundwater flow field and the region eight long-termgroundwater observation wells in the well fitted curve, model credibility high.In the study area, within the initial choice of the Sigezhuang Luannan water source as acontingency reserve to evaluate the contingency ability and emergency water storage capacity with correction model. To ensure that Caofeidian90days to180days for the emergencywater supply9.0×10~4m~3/d, Sigezhuang water source individual supply can meet the need.From the point of view of impact on the environment and the economy, the Sigezhuang watersources have reached a good result. Through emergency before and after, and recovery ofgroundwater level depression cone center level shows after1year, Sigezhuang water sourceto restore water after1year prior to mining of groundwater level and the water level close tothe emergency, has a good storage capacity.