The Analysis And Evaluation Of PanXie Collapse Water Environment Pollution Based On GIS

This article through the application of GIS to huainan PanXie mining subsidence water and the surrounding environment analysed, and connecting with the correlation coefficient and fuzzy comprehensive evaluation method to study the water pollution levels distribution and the possible sources of all kinds of pollutants. In this paper, use the aerial graph area topographic map,import the environmental data of laboratory test for the study area, and established the research area environment based on GIS data layer, and combined with the ArcGIS9.2space analysis module, the use of the interpolation method collapse of pollutant concentration of water on the spatial interpolation, get a different pollutants concentration of the spatial distribution. The article also through the linear correlation analysis and study pollutants the influence degree between the sediment in the collapse water and water body and with the fuzzy comprehensive evaluation method, evaluate the water of PanJi, xieqiao and ZhangJi three collapse of comprehensive pollution degree, through the study, the article concludes the follow results.1Through to the interpolation map analysis can get water pollution of mine collapse mainly from agriculture and life sewage. For example, the highest content of the total nitrogen of PanJi collapse waters from the entrance where the river, the highest concentration of8.221mg/L more than five kinds of national standard, visible in the river mud total nitrogen is collapse water sources of total nitrogen, and along with the flow direction to the concentration of total nitrogen decreased gradually. The total phosphorus concentration distribution is that the highest mud is in the waters of the river collapsed at the entrance, the highest concentration of0.281mg/L, more than national level3standards, and with the direction of flow decrease gradually, in addition, in the northeast corner of the waters of the collapse, the total phosphorus concentration on the high side and at the center of the waters to gradually reduce, this has the great relations with agricultural land of the northeast corner.2In the PanJi collapse waters, total nitrogen coefficient of determination R2is0.715, calculates the correlation coefficient r is0.846>0.765, expression is very significant related; in theXieQiao collapse waters, organic matter and COD manganese coefficient of determination R2is0.4455, calculates the correlation coefficient r is0.667>0.666, and the performance is very significant correlation. And its relevance of other pollutants and ZhangJi all pollutants is in0.05below levels, and the correlation degree small, show that the small influence on each other.3Application of fuzzy comprehensive evaluation method evaluate each collapse waters, and concludes that the PanJi collapse upstream and downstream of the waters is the water quality standards for national five kinds of water. Two collapse that XieQiao waters on the west and east collapse waters is water quality for the national standard three kinds of water, ZhangJi collapse water quality also belong to the national standard three kinds of water, we can see that the collapse waters of ZhangJi and XieQiao is better for overall water quality.