基于多源监测信息的露天矿滑坡案例分析研究
Case Analysis of Open-pit Mine Landslides Based on Multi-sourced Monitoring Information
王振攀 1张诏飞 2祝迎华1
作者信息
- 1. 中铁资源集团勘察设计有限公司,河北 廊坊 065000
- 2. 中铁资源集团勘察设计有限公司,河北 廊坊 065000;河北省非煤矿山岩土工程技术创新中心,河北 廊坊 065000
- 折叠
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1 335～1 365 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,1 380 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1 410 m高度截水、1 320 m以上削坡、1 320 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.
Abstract
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 1 335-1 365 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 1 380 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 1 410 m,cutting slopes above 1 320 m,and reinforcing slope toe at or below 1 320 m.It is expected to achieve slope safety and significant economic benefits.
关键词
边坡监测/多源监测信息/边坡雷达/牵引式滑坡Key words
slope monitoring/multi source monitoring information/slope radar/traction type landslide引用本文复制引用
基金项目
国家重点研发计划(2022YFC2904500)
出版年
2024
NETL
NSTL
万方数据