Study On The Trend Of Mine Development Occupied By The Northern Section Of The Sanjiang Metallogenic Belt

The north section of Sanjiang metallogenic belt is located in Sanjiang metallogenic belt,which is rich in mineral resources,mainly distributed in a NE-SW belt from Mianyang to Panzhihua via Baoxing.The exploitation of mines will occupy and destroy land resources,resulting in a series of environmental problems.This topic adopts the technology of "spatial database + spatial statistical analysis + data visual expression" and under the guidance of information science,analyzes the change of mine land occupation data interpreted by remote sensing in the northern section of Sanjiang metallogenic belt,establishes spatial database with the help of Arc GIS platform,and explores the spatial distribution of mining activities in the northern section of Sanjiang metallogenic belt in 2014-2017 by using the method of spatial analysis In order to provide data support for the sustainable development of economy and mineral resources in the future,for the orderly maintenance of mining management and the remediation of environmental problems caused by mine development and land occupation,and for the similar research direction in the future For a certain reference.The conclusion and understanding of this paper are as follows:(1)Based on the collected data,through mathematical calculation and visual expression of GIS environment,the distribution of mine development land occupation in the north section of Sanjiang metallogenic belt is analyzed from the overall land occupation area,and then from the specific land occupation type(land occupation type,mining and utilization status,mineral type).From 2014 to 2017,the north section of Sanjiang metallogenic belt is analyzed The total area of mine is increasing linearly;(2)With the help of Arc GIS platform and the analysis methods of global autocorrelation and local autocorrelation(hot spot analysis)in spatial statistics,this paper summarizes the spatial distribution characteristics and aggregation of mine development land in the north section of Sanjiang metallogenic belt,and concludes that the high concentration area of mine development land is mainly distributed in Panzhihua City in the south of Sanjiang metallogenic belt and Liangshan Yi Autonomous Prefecture,and the low concentration area is mainly divided It is distributed in Aba Tibetan and Qiang Autonomous Prefecture,Ganzi Tibetan Autonomous Prefecture,Gannan Tibetan Autonomous Prefecture and Golog Tibetan Autonomous Prefecture of Qinghai Province;(3)Through the combination of cluster analysis,outlier analysis and Kriging analysis,this paper vividly describes the analysis of the prediction of mine development land occupation in the north section of Sanjiang metallogenic belt,and draws the classification map without administrative divisions.It is concluded that the mine development land occupation in the south part of the north section of Sanjiang metallogenic belt is gradually decreasing,and the east southeast belt is expanding.