Rertospective Environmental Impact Assessment Of Bayan OBO Main And East Mine

Bayan obo mine is located in North150km at Baotou city. Bayan obo mine is a large multi-metal deposits what is containing iron, rare earth, niobium of the main resources. These deposits in the Bayan obo group Contact the Department of dolomite or dolomite and siliceous slate. Iron, rare earth and niobium mineralization of large-scale mining area, the extent of18km from east to west,2～3km from north to south,area of48km2. The mining area from west to east distribution of five orebodies, namely the west mine, the main mine, east mine, east Jiegele mine and eastern contact zone.Bayan obo main and east mine is attached to the Baotou Iron and Steel (Group) Co., Ltd. The two mine Were first two mined deposits in Bayan obo mine. Formal exploration of the Bayan obo main and east mine began in1950. Design in1956, the same year began to construction. Be completed in1957. In1987, Into deep mining phase, and was determined the scale of1200×104t/a, main mine is700×104t/a, east mine is500×104t/a. The development transportation program for the combined transport program of railway, highway off-flip.After50years of mining, into deep mining phase. Years of mined cause a certain degree of influence on the surrounding ambient air, groundwater and ecological environment.Based on investigation production process, pollutant generation and emissions process of Bayan obo main and east mine, environmental monitoring in2011, and the status information of the surrounding area over the years of Bayan Obo main and east in the surrounding areas. Use of data analysis and comparison, were retrospectively environmental assessment of the surrounding areas of Bayan obo main and east mine. In order to determine the environmental impact on the areas for years of mining, analyze the reasons for the environmental impact. Targeted the existing major environmental problems, proposed environmental rectification plan and ecological restoration measures.