Hydro-chemical Characteristics And Resource Utilization Of Mine Water Of Yinmin Copper Mining Area In Dongchuan

Water resource is shortage in our country, per capita hold of water resource is a quarter of global average level, and it is pockety in space-time. The shortage of water resource is one of the important factors that have restricted China's economic development. The 70 percent mine is short of water resource, and 40 percent mine is severe water scarcity in China, domestic water is shortage in most of mining area too, so more and more mines are seeking to utilize mine water to keep mine in sustainable development. The mining hole is rich in water resource with characteristics in big volume and flow stability in Yinmin copper mining area. With mining to deep, direct or indirect harm from adit water is more and more serious. Discharge of mine water brings a series of environmental problems, and aggravates vulnerability ecological environment, therefore resource utilization of mine water becomes a primary and urgent problem that is to be study.Research Scope is an independent developing system, including five adits from up to down. Based on survey, sampling and testing analysis we evaluated totally the quality and quantity of groundwater resource to study resource recycling.1. The author analyzed the routine hydrochemistry elements of mine water and its distributing characteristics, formation. Evaluated mine water quality for industrial water based on erosiveness to steel, iron, concrete, boiler, and heavy metal pollution. The research suggests that Hydrochemical evolution of mine water is controlled by mining activities and geochemical background; spring water is safe to drink; mine water has thin erosiveness to iron and steel because of high concentration of SO42- and Cu2+; no erosiveness to concrete; mine water is non-foaming, lesser precipitate, semi-erosiveness and most of boiler scale is hard scale.2. Practical discharge of adits was measured by means of weir plate, in the meantime the author estimated discharge of design adits by hydrogeologic analogy method. The survey concludes that adits are rich in water resources, but consumable use ratio of mine water is only 25.76 percent; use ratio of water delivery for dressing plant is 60 percent. Theory water reserves, availability water reserves and utilized water reserves were estimated by means of Bernoulli equation, it conclude that use ratio of exploitable water resource is 27.42 percent, utilized ratio is 13.70%. Analyzing exploitation potential of mine water, increase water reserves is about 11514.943kW and economically feasible water reserves is 2810.056 kW after 2110m adit and 2230m adit were opening, but now economically feasible water reserves is 2421.863 kW.3. The quality of discharge of dressing plant was valuated with appraisinig mine water, to provide reference for reutilization of discharge...