基于三维激光扫描的尾矿库变化监测及稳定性分析

Monitoring and Stability Analysis of Tailings Pond Changes Based on 3D Laser Scanning

本文以金属非金属矿山可视化安全监测专项为依托,利用三维激光扫描技术对米易万年沟尾矿库进行安全监测,对2021年1月到2022年12月的库区进行了扫描监测。结果表明:现状干滩长度524.555 m,万年沟尾矿库万年沟库区面积增加14.5万m^(2),堆积坝高由1579.249 m增加至1589.09 m共增加9.841 m,筑坝速率为4.9205 m/a;新增堆排尾砂约1265.7万m^(3),堆排速率为660.365万m^(3)/a;尾矿库总库容较大,筑坝速率、堆排速率较快,为防止溃坝带来的严重后果,运用了三种极限平衡法,其计算结果表明尾矿库目前处于稳定状态。

This article is based on the special project of visual safety monitoring for metal and non-metallic mines.3D laser scanning technology is used to monitor the safety of the Miyi Wanniangou tailings pond.The reservoir area from January 2021 to December 2022 was scanned and monitored.The results show that the current length of the dry beach is 524.555 meters,the area of the Wanniangou tailings pond has increased by 145000 square meters,and the height of the accumulation dam has increased from 1579.249 meters to 1589.09 meters,with a total increase of 9.841 meters,The dam construction speed is 5.134 m/a;Approximately 12.657 million cubic meters of newly added tailings,The stacking rate is 66036500 m^(3)/a;The total capacity of the tailings pond is relatively large,and the dam construction and discharge rates are fast.In order to prevent serious consequences caused by dam failure,three limit equilibrium methods were used.The calculation results show that the tailings pond is currently in a stable state.