基于无人机多模态感知的露天煤矿爆破智能监管与安全效能提升研究

    Research on intelligent supervision and safety efficiency enhancement of open pit coal mine blasting based on multimodal sensing of UAV

    • 摘要: 爆破作业作为露天矿最危险、劳动力最密集的生产工序,是露天开采的首要环节。生产规模的粗放式扩张使得传统人工巡检模式在穿爆环节面临严峻挑战。传统人工巡检模式在穿爆环节不仅面临炮孔定位偏大(大于27.4%)、充填质量监测效率低、爆破块度合格率检测差(60%~72%)等问题,还面临爆区三维地质信息的不透明、设备协同管控效率低、频繁爆破作业引发的台阶结构面拉裂损伤,以及火灾、滑坡等安全隐患难预警等衍生风险。面向低空经济新业态发展与露天煤矿智能化转型需求,提出了基于无人机辅助的协同动态监管系统技术研发,研究构建了“空−地−端−环”实时联控框架:空中依托多旋翼无人机搭载高分辨多光谱摄影仪、红外热成像仪、气体监测装置等可高效完成170个炮孔的爆破面高精度三维实景建模;地面层部署多参数传感网络,构建深度达10 m的爆破振动监测网络;终端层开发了双模态目标检测模型与改进YOLOv8 m-MSFA视觉算法,通过引入多尺度特征注意力机制(MSFA),将目标识别准确度提升至96%以上,并建立了数据驱动的爆破效果动态评价体系。应用结果表明:该技术体系显著缩短了传统人工经验主导的参数迭代周期,从6~8 h压缩至2 h以内,迭代效率提升56.7%~63.8%,作业效率提升30%~40%,非法入侵预警准确率达96.4%,有效解决了传统经验驱动型爆破作业存在的安全隐患大、资源浪费严重等问题。

       

      Abstract: Blasting is the most dangerous and labour-intensive production process in open pit mines, and it is also the most important part of open pit mining. The rough expansion of production scale makes the traditional manual inspection in the blasting process face great challenges. The traditional manual inspection mode not only faces problems such as overly large positioning of blast holes (greater than 27.4%), low efficiency of filling quality monitoring, and poor detection rate of qualified blasting block size (60% - 72%) in the blasting process, but also encounters problems such as the opacity of three-dimensional geological information in the blasting area, low efficiency of equipment collaborative control and management, and tensile damage to the step structure surface caused by frequent blasting operations, and derivative risks such as the difficulty in early warning of potential safety hazards like fires and landslides. Facing the development of new business forms of low-altitude economy and the intelligent transformation requirements of open-pit coal mines, the technological research and development of a collaborative dynamic supervision system based on unmanned aerial vehicle (UAV) assistance was proposed, and a real-time interlinked control framework of “air-ground-terminal-environment” was studied and constructed: relying on multi-rotor unmanned aerial vehicles in the air, equipped with high-resolution multispectral cameras, infrared thermal imagers, gas monitoring devices, etc., high-precision three-dimensional real-scene modeling of the blasting surfaces of 170 blast holes can be efficiently completed; a multi-parameter sensor network is deployed at the ground layer to construct a blasting vibration monitoring network with a depth of up to 10 meters; the terminal layer has developed a dual-modal target detection model and an improved YOLOv8 m-MSFA visual algorithm. By introducing the multi-scale feature attention mechanism (MSFA), the target recognition accuracy has been increased to more than 96%, and a data-driven dynamic evaluation system for blasting effects has been established. The application results show that: this technical system significantly shortens the parameter iteration cycle dominated by traditional manual experience, compressing it from 6-8 hours to within 2 hours. The iteration efficiency increases by 56.7% - 63.8%, the operation efficiency increases by 30% - 40%, and the accuracy rate of illegal intrusion early warning reaches 96.4%. It has effectively solved the problems such as large safety hazards and serious waste of resources existing in traditional experience-driven blasting operations.

       

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