Analysis and research on local collapse of open-pit high and steep slope by comprehensive monitoring method
Based on the comprehensive monitoring of the east side of the open-pit stope of Zijinshan gold and copper mine in Shanghang County,Fujian Province,combined with the slope radar warning data,GNSS monitor-ing data,and internal displacement meter monitoring data,this paper analyzes the sudden collapse of the 820～868 slope in the northeast side of the stope caused by rainfall under the dual effects of gravity and rainwater erosion.The slope radar has monitored the trend of displacement acceleration deformation,but it has not issued an early warning in time.Using comprehensive monitoring methods,further accurate analysis of high and steep slopes.In order to solve the problem of slope radar early warning and further monitor the local collapse deformation of the slope,the paper sets up the early warning zone,delineates the area of the 820～868 slope in the northeast of the stope,and sets a more sensitive early warning threshold.The short-term early warning value,long-term early warn-ing value and early warning area of yellow early warning and red early warning of slope radar monitoring in the delineated area are reduced,and the early warning zoning is set up for the collapse area,so as to make more accurate early warning and show the trend of fluctuation of monitoring data,which provides reference for similar high and steep open-pit slope monitoring.
integrated monitoringZijinshan gold and copper minehigh and steep slopeslope radarearly-warning zoning
NETL
NSTL
万方数据
