摘要
边坡监测是露天矿山生产和安全管理的重要环节,从现场监测数据中挖掘多源信息,分析致灾因素、灾变前兆特征和滑坡类型等,是有效治理滑坡的必要条件。以刚果(金)地区某露天矿滑坡监测为例,综合降雨量、边坡雷达、无人机正射影像、智能全站仪等获取的多源监测信息展开综合分析研究。通过边坡雷达和降雨量监测数据对比,验证了降雨是本案例滑坡发生的直接诱发因素;对比边坡雷达和无人机正射影像数据,对滑体规模做出判断;综合边坡雷达和智能全站仪监测数据,判断案例滑坡为牵引式滑坡,主滑段位于1335~1365 m高度,主滑方向受不整合接触面控制为向东、向下;受滑面产状和重力影响,1380 m高度滑体在Y方向和Z方向上表现出对下方区域的推移作用;综合以上对滑体规模、滑坡类型和滑动变形特征的研究结果,推荐在1410 m高度截水、1320 m以上削坡、1320 m及以下坡脚加固的综合治理方案,预计可保证边坡稳定安全和实现较大的经济效益。
Slope monitoring is an important daily safety work in open-pit mining production.Extracting multi-source information from on-site monitoring data,analyzing disaster factors,precursor characteristics,and landslide types are necessary conditions for effective landslide control.Taking the monitoring of a copper cobalt mine landslide in the Democratic Republic of Congo(DRC)region as an example,a comprehensive analysis and research were conducted based on multi-source monitoring information obtained from rainfall,slope radar,drone orthophoto images,and intelligent total stations.By comparing slope radar and rainfall monitoring data,rainfall as the direct triggering factor of landslide occurrence were verified in the case.Through the comparison of the slope radar and drone orthophoto data,a judgment on the scale of the landslide was made.Based on the comprehensive monitoring data of slope radar and intelligent total station,it is determined that the landslide in the case is a traction type landslide,with the main sliding section located at a height of 1335–1365 m.The main sliding direction is controlled by the unconformity contact surface to be eastward and downwards.Affected by the occurrence of the sliding surface and gravity,the 1380 m high sliding body exhibits a pushing effect on the lower area in the Y and Z directions.Combining the above research results on the scale,type,and deformation characteristics of sliding masses,we recommend adopting a comprehensive treatment plan of intercepting water at a height of 1410 m,cutting slopes above 1320 m,and reinforcing slope toe at or below 1320 m.It is expected to achieve slope safety and significant economic benefits.
作者
王振攀
张诏飞
祝迎华
WANG Zhenpan;ZHANG Zhaofei;ZHU Yinghua(China Railway Resources Group Survey and Design Co.,Ltd.,Langfang 065000,Hebei,China;Innovation Center of Non-coal Geotechnical Engineering,Langfang 065000,Hebei,China)
出处
《中国钨业》
CAS
2024年第1期7-14,共8页
China Tungsten Industry
基金
国家重点研发计划(2022YFC2904500)。
关键词
边坡监测
多源监测信息
边坡雷达
牵引式滑坡
slope monitoring
multi source monitoring information
slope radar
traction type landslide
