Research On Dynamic Monitoring Of Geological Environment In Wick Open Pit Iron Mine In Beijing

Taking the Wick open-pit iron mine in Beijing as an example,this paper uses the satellite-unmanned aerial vehicle remote sensing technology and ground RTK technology to construct a dynamic environment monitoring system for the integration of heaven and earth and space,aiming at solving the current problems in the dynamic monitoring of mine environment.The main research results are as follows:(1)Through RTK technology and UAV remote sensing technology,rapid and low-cost acquisition of high-accuracy DSM and DOM data in mines can be accomplished,which provides data security for dynamic monitoring of mine environments.(2)Based on multi-source,long-term sequence of remote sensing data,the mining development situation from 2009 to 2016 is obviously clear.The mining area increased year by year,and the annual average increasing amount from 2011 to 2014were the largest,with an annual average growth of 89,000 m~2.(3)Using the high-resolution DSM data collected by UAV remote sensing technology,a three-dimensional geological solid model of the mine was established to carry out dynamic monitoring and error analysis of mine stripping between 2014and 2016.The results show that the total stripping during the time period The extraction volume is about 10.15 million m~3,and the total accumulation is about 5.77million m~3.(4)This paper takes the geological disasters on the north side of the mine as the research object,establishes a three-dimensional geological disaster evolution analysis model,and quantitatively analyzes the sliding and restoration status of the geological disaster body.(5)Established a simulation model of water flow under high-resolution DSM data,which helps to discover three hidden points of water erosion disasters in the mine,and provide basis for mine roads and building planning.