Study On Spacial Distribution Features Of Pollutants In The Subsidence Area Of Water Environment In LiuQiao Coal Mining Area Based On GIS

This article makes analysis of Huaibei Liuqiao coal mining area and the surroundings through the application of GIS, and combines with multi-factor comprehensive evaluation of water quality model to study the pollution degree, distribution law and possible sources of a variety of pollutants waters. This article uses the topographic map and the aerial map to establish the environment data coverage of the study area, which is based on GIS, import the different environment data of the study area, which is detected by the laboratory, and combines with the space analysis module and special interpolation of the concentration of the pollutants in different subsiding water area by the use of interpolation method, then reaches the special distribution maps of the concentration of different pollutants.This article comes to the following conclusion through the study:l.The comprehensive statics of the distribution in different reach areas of average value of major water environment of the collapse area in Liuqiao mining area show that the change of concentration of different index is subtle, in which the single concentration of TN, Cr and Cd is higher than other index and exceed or reach the water quality standard V of surface accords with the water quality standard Ⅰ～Ⅱ,and they can be used for production activities such as agricultural irrigation as a whole.2.The correlational research of the special distribution features of the pollutants in the collapse area in Liuqiao mining coal area based on GIS gives rise to the best interpolational distribution map of different factors. These factors are equably distributed in map as a whole, some individuals, such as TN, Zn, Pb are distributed regularly or irregularly in some area.3.To research and evaluate the whole water quality of Liuqiao coal mining collapse area by the method of multifactorial comprehensive evaluation of pollution, the water quality could reach the water quality standard V of surface water, and some area could reach the water quality standard IV of surface water in some periods.